Question 1
75% of 156 = ?
Percentage drill — no paper.
- 127
- 1170
- 12
- 117
- 107
Show the worked solution
- 75% is 3/4 — so take 3/4 of 156: 117.
Exam path · Percentages
Percentage questions for bank exam papers, done as fractions
Percentage questions for bank exam papers are rarely hard and frequently slow, and the difference is whether you multiply or convert. Learn the common percentages as fractions — 25% is a quarter, 12.5% an eighth, 16.66% a sixth — and most of them collapse into one mental step. Percentages also sit under profit and loss, interest and data interpretation, so speed here pays across the section.
Percentages are the highest-leverage topic in the quantitative section, because they are not really one topic. Profit and loss is percentages, simple and compound interest is percentages, and half of every data interpretation set is a percentage change between two cells of a table. A candidate who computes 37.5% of 640 by long multiplication is not slow at percentages; they are about to be slow at four other topics as well.
Try it against the clock. Percentages runs at 20s easy, 30s medium and 40s hard. The clock is stamped and judged on our server, so the limit you see is the deadline that is actually enforced — and it starts when you tap Start, not while the question is loading.
3 real percentage questions for bank exam, with worked solutions
Generated by the same engine that mints the ComputePrep daily. Each answer is computed from the numbers printed in the question, and the walkthrough below each one is the engine's own working — not a solution written afterwards. Reload this page's live drill and you get different numbers.
Question 2
40% of 120 = ?
Percentage drill — no paper.
- 5
- 48
- 58
- 480
- 38
Show the worked solution
- 40% of 120 = 40 × 120 / 100 = 48.
Question 3
15% of 740 = ?
Percentage drill — no paper.
- 1110
- 101
- 121
- 11
- 111
Show the worked solution
- 15% of 740 = 15 × 740 / 100 = 111.
How to solve percentage questions for bank exam papers fast
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Convert the percentage to a fraction, not a decimal
75% of 64 is 3/4 of 64 = 48, in one step. As 0.75 × 64 it is a multiplication. The fraction table below is the single highest-return thing to memorise in the whole quant section.
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Swap the two numbers when it helps
a% of b always equals b% of a. 16% of 25 looks awkward; 25% of 16 is 4. This identity costs nothing and turns a fair number of questions into one glance.
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Break awkward percentages into easy pieces
37.5% is 25% + 12.5%. 15% is 10% + 5%, and 5% is half of 10%. Building the answer out of tenths and halves is faster than any single multiplication, and it is far less error-prone under a clock.
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Treat successive changes as multipliers
A 20% rise followed by a 20% fall is 1.2 × 0.8 = 0.96, a 4% net fall, not a return to where you started. Every successive-change question in a bank paper turns on this.
The fraction table worth memorising
| Percentage | Fraction |
|---|---|
| 6.25% | 1/16 |
| 8.33% | 1/12 |
| 11.11% | 1/9 |
| 12.5% | 1/8 |
| 14.28% | 1/7 |
| 16.66% | 1/6 |
| 20% | 1/5 |
| 25% | 1/4 |
| 33.33% | 1/3 |
| 37.5% | 3/8 |
| 62.5% | 5/8 |
| 75% | 3/4 |
Common mistakes this drill is built from
The wrong options are not random numbers. Each one is the result of a specific careless error for this topic, so picking one tells you which habit is costing you marks.
Assuming a rise then an equal fall cancels out
Up 20% then down 20% leaves you 4% below where you started, because the fall is taken on the larger number. The setter will offer "no change" as an option and it will look right.
Confusing percentage points with percent
A rate going from 5% to 7% has risen by two percentage points and by 40 percent. Data interpretation sets ask for one and offer the other.
Taking the percentage of the wrong base
"20% more than B" and "20% less than A" are not inverse statements. If A is 20% more than B, then B is 16.66% less than A — not 20%.
FAQ
Why convert percentages to fractions?
Because it removes the multiplication. 37.5% of 640 as 3/8 of 640 is 240 in one step, where the decimal route is a three-digit multiplication. Under a 30-second clock that difference decides whether you attempt the question at all.
Which percentage-to-fraction values should I memorise?
The eight that recur most are 12.5% as 1/8, 16.66% as 1/6, 20% as 1/5, 25% as 1/4, 33.33% as 1/3, 37.5% as 3/8, 62.5% as 5/8 and 75% as 3/4. The full table on this page adds the rest.
Does a 20% increase followed by a 20% decrease cancel out?
No. The result is 4% below the starting value, because the decrease is applied to the larger number. The general rule for successive changes of a and b percent is a plus b plus ab over 100, with signs.
How much of a bank exam depends on percentages?
More than the topic count suggests. Profit and loss, simple and compound interest, and most data interpretation questions are percentage arithmetic in another costume, so speed here compounds across the section.
Practise the next topic
- All 21 drill types — the full rotation with every published time limit.
- Profit and loss questions — profit and loss questions, timed.
- Average questions — average questions, timed.
- Vedic maths shortcuts — the five sutras that make a 15-second answer possible.
- How to improve calculation speed — the six-week arc these drills fit into.
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