Find 5% of 80.
Answer / solution
Correct option: D
5% of 80 = 80×5/100 = 4.
% Every SSC and banking paper
Percentage — formula, example and practice
The base chapter for profit-loss, interest and data interpretation.
Content type: original worked example. Not labelled as a previous-year question.
Timed GK/quant mock Shortcuts CBSE Class 10 Maths 150 questions
Formula
x% of N = (x/100) × N · N is what % of M = (N/M) × 100
Percentage is a number written as parts per hundred. Almost every SSC arithmetic chapter (profit-loss, interest, DI) is a percentage in disguise.
What you should learn here
Students search “percentage questions for SSC GD” because this chapter is short to learn and long to master. The paper does not ask you to recite “per hundred”. It asks you to survive two successive changes, a population-growth sentence, or a DI table that only prints percentages.
Start from one identity: a% of b equals b% of a. That single swap saves time in mental arithmetic. Then learn the multiplier: an increase of r% is ×(100+r)/100; a decrease is ×(100−r)/100. Chain them in the same order the question states.
For “A is what percent of B”, write (A/B)×100 and simplify the fraction before multiplying. For “A is what percent more than B”, the base is B, not A — that mix-up is the most common mark loss in GD and MTS.
Worked example
Question. A number is first increased by 20% and then decreased by 20%. What is the net change?
Solution. Net multiplier = 1.20 × 0.80 = 0.96. Net change is a 4% decrease. Shortcut: successive +x% and −x% always gives −(x²/100)% .
Common mistake. Adding +20 and −20 as zero. Successive percentages multiply; they do not cancel.
When to use the shortcut. Use the multiplier method (1 ± r/100) whenever two or more changes happen in a row.
Related chapters and tests
Simplification Profit and Loss Ratio and Proportion Average All formulas SSC GD mocks SSC CGL mocks
150 important Percentage questions
Original arithmetic practice for this page. Not labelled as previous-year SSC/railway items. Tap an option to mark it. Open “Answer” for the working.
Score: 0 / 0
A number 250 is increased by 15%. The new value is
Answer / solution
Correct option: B
New = 250×(100+15)/100 = 287.
A number 480 is decreased by 15%. The new value is
Answer / solution
Correct option: C
New = 480×(100−15)/100 = 408.
32 is what percent of 140?
Answer / solution
Correct option: B
(32/140)×100 = 22%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 130, it equals
Answer / solution
Correct option: B
130 + 25% of 130 = 162.
Find 35% of 200.
Answer / solution
Correct option: A
35% of 200 = 200×35/100 = 70.
A number 550 is increased by 45%. The new value is
Answer / solution
Correct option: C
New = 550×(100+45)/100 = 797.
A number 720 is decreased by 45%. The new value is
Answer / solution
Correct option: D
New = 720×(100−45)/100 = 396.
56 is what percent of 260?
Answer / solution
Correct option: D
(56/260)×100 = 21%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 110, it equals
Answer / solution
Correct option: A
110 + 25% of 110 = 137.
Find 65% of 320.
Answer / solution
Correct option: D
65% of 320 = 320×65/100 = 208.
A number 250 is increased by 35%. The new value is
Answer / solution
Correct option: C
New = 250×(100+35)/100 = 337.
A number 560 is decreased by 25%. The new value is
Answer / solution
Correct option: B
New = 560×(100−25)/100 = 420.
80 is what percent of 180?
Answer / solution
Correct option: C
(80/180)×100 = 44%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 90, it equals
Answer / solution
Correct option: B
90 + 25% of 90 = 112.
Find 20% of 440.
Answer / solution
Correct option: A
20% of 440 = 440×20/100 = 88.
A number 550 is increased by 25%. The new value is
Answer / solution
Correct option: A
New = 550×(100+25)/100 = 687.
A number 400 is decreased by 5%. The new value is
Answer / solution
Correct option: A
New = 400×(100−5)/100 = 380.
24 is what percent of 100?
Answer / solution
Correct option: C
(24/100)×100 = 24%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 150, it equals
Answer / solution
Correct option: C
150 + 25% of 150 = 187.
Find 50% of 160.
Answer / solution
Correct option: B
50% of 160 = 160×50/100 = 80.
A number 250 is increased by 15%. The new value is
Answer / solution
Correct option: B
New = 250×(100+15)/100 = 287.
A number 640 is decreased by 35%. The new value is
Answer / solution
Correct option: A
New = 640×(100−35)/100 = 416.
48 is what percent of 220?
Answer / solution
Correct option: B
(48/220)×100 = 21%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 130, it equals
Answer / solution
Correct option: B
130 + 25% of 130 = 162.
Find 5% of 280.
Answer / solution
Correct option: A
5% of 280 = 280×5/100 = 14.
A number 550 is increased by 45%. The new value is
Answer / solution
Correct option: C
New = 550×(100+45)/100 = 797.
A number 480 is decreased by 15%. The new value is
Answer / solution
Correct option: C
New = 480×(100−15)/100 = 408.
72 is what percent of 140?
Answer / solution
Correct option: D
(72/140)×100 = 51%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 110, it equals
Answer / solution
Correct option: A
110 + 25% of 110 = 137.
Find 35% of 400.
Answer / solution
Correct option: A
35% of 400 = 400×35/100 = 140.
A number 250 is increased by 35%. The new value is
Answer / solution
Correct option: C
New = 250×(100+35)/100 = 337.
A number 720 is decreased by 45%. The new value is
Answer / solution
Correct option: D
New = 720×(100−45)/100 = 396.
96 is what percent of 260?
Answer / solution
Correct option: B
(96/260)×100 = 36%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 90, it equals
Answer / solution
Correct option: B
90 + 25% of 90 = 112.
Find 65% of 120.
Answer / solution
Correct option: C
65% of 120 = 120×65/100 = 78.
A number 550 is increased by 25%. The new value is
Answer / solution
Correct option: A
New = 550×(100+25)/100 = 687.
A number 560 is decreased by 25%. The new value is
Answer / solution
Correct option: B
New = 560×(100−25)/100 = 420.
40 is what percent of 180?
Answer / solution
Correct option: A
(40/180)×100 = 22%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 150, it equals
Answer / solution
Correct option: C
150 + 25% of 150 = 187.
Find 20% of 240.
Answer / solution
Correct option: A
20% of 240 = 240×20/100 = 48.
A number 250 is increased by 15%. The new value is
Answer / solution
Correct option: B
New = 250×(100+15)/100 = 287.
A number 400 is decreased by 5%. The new value is
Answer / solution
Correct option: A
New = 400×(100−5)/100 = 380.
64 is what percent of 100?
Answer / solution
Correct option: A
(64/100)×100 = 64%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 130, it equals
Answer / solution
Correct option: B
130 + 25% of 130 = 162.
Find 50% of 360.
Answer / solution
Correct option: A
50% of 360 = 360×50/100 = 180.
A number 550 is increased by 45%. The new value is
Answer / solution
Correct option: C
New = 550×(100+45)/100 = 797.
A number 640 is decreased by 35%. The new value is
Answer / solution
Correct option: A
New = 640×(100−35)/100 = 416.
88 is what percent of 220?
Answer / solution
Correct option: D
(88/220)×100 = 40%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 110, it equals
Answer / solution
Correct option: A
110 + 25% of 110 = 137.
Find 5% of 80.
Answer / solution
Correct option: D
5% of 80 = 80×5/100 = 4.
A number 250 is increased by 35%. The new value is
Answer / solution
Correct option: C
New = 250×(100+35)/100 = 337.
A number 480 is decreased by 15%. The new value is
Answer / solution
Correct option: C
New = 480×(100−15)/100 = 408.
32 is what percent of 140?
Answer / solution
Correct option: B
(32/140)×100 = 22%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 90, it equals
Answer / solution
Correct option: B
90 + 25% of 90 = 112.
Find 35% of 200.
Answer / solution
Correct option: A
35% of 200 = 200×35/100 = 70.
A number 550 is increased by 25%. The new value is
Answer / solution
Correct option: A
New = 550×(100+25)/100 = 687.
A number 720 is decreased by 45%. The new value is
Answer / solution
Correct option: D
New = 720×(100−45)/100 = 396.
56 is what percent of 260?
Answer / solution
Correct option: D
(56/260)×100 = 21%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 150, it equals
Answer / solution
Correct option: C
150 + 25% of 150 = 187.
Find 65% of 320.
Answer / solution
Correct option: D
65% of 320 = 320×65/100 = 208.
A number 250 is increased by 15%. The new value is
Answer / solution
Correct option: B
New = 250×(100+15)/100 = 287.
A number 560 is decreased by 25%. The new value is
Answer / solution
Correct option: B
New = 560×(100−25)/100 = 420.
80 is what percent of 180?
Answer / solution
Correct option: C
(80/180)×100 = 44%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 130, it equals
Answer / solution
Correct option: B
130 + 25% of 130 = 162.
Find 20% of 440.
Answer / solution
Correct option: A
20% of 440 = 440×20/100 = 88.
A number 550 is increased by 45%. The new value is
Answer / solution
Correct option: C
New = 550×(100+45)/100 = 797.
A number 400 is decreased by 5%. The new value is
Answer / solution
Correct option: A
New = 400×(100−5)/100 = 380.
24 is what percent of 100?
Answer / solution
Correct option: C
(24/100)×100 = 24%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 110, it equals
Answer / solution
Correct option: A
110 + 25% of 110 = 137.
Find 50% of 160.
Answer / solution
Correct option: B
50% of 160 = 160×50/100 = 80.
A number 250 is increased by 35%. The new value is
Answer / solution
Correct option: C
New = 250×(100+35)/100 = 337.
A number 640 is decreased by 35%. The new value is
Answer / solution
Correct option: A
New = 640×(100−35)/100 = 416.
48 is what percent of 220?
Answer / solution
Correct option: B
(48/220)×100 = 21%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 90, it equals
Answer / solution
Correct option: B
90 + 25% of 90 = 112.
Find 5% of 280.
Answer / solution
Correct option: A
5% of 280 = 280×5/100 = 14.
A number 550 is increased by 25%. The new value is
Answer / solution
Correct option: A
New = 550×(100+25)/100 = 687.
A number 480 is decreased by 15%. The new value is
Answer / solution
Correct option: C
New = 480×(100−15)/100 = 408.
72 is what percent of 140?
Answer / solution
Correct option: D
(72/140)×100 = 51%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 150, it equals
Answer / solution
Correct option: C
150 + 25% of 150 = 187.
Find 35% of 400.
Answer / solution
Correct option: A
35% of 400 = 400×35/100 = 140.
A number 250 is increased by 15%. The new value is
Answer / solution
Correct option: B
New = 250×(100+15)/100 = 287.
A number 720 is decreased by 45%. The new value is
Answer / solution
Correct option: D
New = 720×(100−45)/100 = 396.
96 is what percent of 260?
Answer / solution
Correct option: B
(96/260)×100 = 36%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 130, it equals
Answer / solution
Correct option: B
130 + 25% of 130 = 162.
Find 65% of 120.
Answer / solution
Correct option: C
65% of 120 = 120×65/100 = 78.
A number 550 is increased by 45%. The new value is
Answer / solution
Correct option: C
New = 550×(100+45)/100 = 797.
A number 560 is decreased by 25%. The new value is
Answer / solution
Correct option: B
New = 560×(100−25)/100 = 420.
40 is what percent of 180?
Answer / solution
Correct option: A
(40/180)×100 = 22%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 110, it equals
Answer / solution
Correct option: A
110 + 25% of 110 = 137.
Find 20% of 240.
Answer / solution
Correct option: A
20% of 240 = 240×20/100 = 48.
A number 250 is increased by 35%. The new value is
Answer / solution
Correct option: C
New = 250×(100+35)/100 = 337.
A number 400 is decreased by 5%. The new value is
Answer / solution
Correct option: A
New = 400×(100−5)/100 = 380.
64 is what percent of 100?
Answer / solution
Correct option: A
(64/100)×100 = 64%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 90, it equals
Answer / solution
Correct option: B
90 + 25% of 90 = 112.
Find 50% of 360.
Answer / solution
Correct option: A
50% of 360 = 360×50/100 = 180.
A number 550 is increased by 25%. The new value is
Answer / solution
Correct option: A
New = 550×(100+25)/100 = 687.
A number 640 is decreased by 35%. The new value is
Answer / solution
Correct option: A
New = 640×(100−35)/100 = 416.
88 is what percent of 220?
Answer / solution
Correct option: D
(88/220)×100 = 40%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 150, it equals
Answer / solution
Correct option: C
150 + 25% of 150 = 187.
Find 5% of 80.
Answer / solution
Correct option: D
5% of 80 = 80×5/100 = 4.
A number 250 is increased by 15%. The new value is
Answer / solution
Correct option: B
New = 250×(100+15)/100 = 287.
A number 480 is decreased by 15%. The new value is
Answer / solution
Correct option: C
New = 480×(100−15)/100 = 408.
32 is what percent of 140?
Answer / solution
Correct option: B
(32/140)×100 = 22%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 130, it equals
Answer / solution
Correct option: B
130 + 25% of 130 = 162.
Find 35% of 200.
Answer / solution
Correct option: A
35% of 200 = 200×35/100 = 70.
A number 550 is increased by 45%. The new value is
Answer / solution
Correct option: C
New = 550×(100+45)/100 = 797.
A number 720 is decreased by 45%. The new value is
Answer / solution
Correct option: D
New = 720×(100−45)/100 = 396.
56 is what percent of 260?
Answer / solution
Correct option: D
(56/260)×100 = 21%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 110, it equals
Answer / solution
Correct option: A
110 + 25% of 110 = 137.
Find 65% of 320.
Answer / solution
Correct option: D
65% of 320 = 320×65/100 = 208.
A number 250 is increased by 35%. The new value is
Answer / solution
Correct option: C
New = 250×(100+35)/100 = 337.
A number 560 is decreased by 25%. The new value is
Answer / solution
Correct option: B
New = 560×(100−25)/100 = 420.
80 is what percent of 180?
Answer / solution
Correct option: C
(80/180)×100 = 44%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 90, it equals
Answer / solution
Correct option: B
90 + 25% of 90 = 112.
Find 20% of 440.
Answer / solution
Correct option: A
20% of 440 = 440×20/100 = 88.
A number 550 is increased by 25%. The new value is
Answer / solution
Correct option: A
New = 550×(100+25)/100 = 687.
A number 400 is decreased by 5%. The new value is
Answer / solution
Correct option: A
New = 400×(100−5)/100 = 380.
24 is what percent of 100?
Answer / solution
Correct option: C
(24/100)×100 = 24%.
A value rises 30% and then 30%. Net % increase is
Answer / solution
Correct option: B
Net = x+y+xy/100 = 30+30+(900)/100 = 69%.
If a quantity is 25% more than 150, it equals
Answer / solution
Correct option: C
150 + 25% of 150 = 187.
Find 50% of 160.
Answer / solution
Correct option: B
50% of 160 = 160×50/100 = 80.
A number 250 is increased by 15%. The new value is
Answer / solution
Correct option: B
New = 250×(100+15)/100 = 287.
A number 640 is decreased by 35%. The new value is
Answer / solution
Correct option: A
New = 640×(100−35)/100 = 416.
48 is what percent of 220?
Answer / solution
Correct option: B
(48/220)×100 = 21%.
A value rises 10% and then 30%. Net % increase is
Answer / solution
Correct option: C
Net = x+y+xy/100 = 10+30+(300)/100 = 43%.
If a quantity is 25% more than 130, it equals
Answer / solution
Correct option: B
130 + 25% of 130 = 162.
FAQs
Are these previous-year SSC questions?
No year or shift is claimed on these pages. Each maths section has 150 original practice MCQs. When a verified source database exists, a question will show exam + year; until then it is practice.
Where are Class 10 board formulas?
The CBSE formula sheet at /cbse/class-10/mathematics/formulas/ stays the canonical board list. This maths hub links to it instead of copying every line.
Do you publish tricks that are only sometimes true?
Every shortcut page states when the trick must not be used. A speed trick that fails on close options is not published as if it were a theorem.
