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BCS Preliminary Percentages Questions
Practise percentages (quantitative aptitude) for the Bangladesh Civil Service Preliminary Test: 10 multiple-choice questions, each with the correct answer and a worked explanation. Click an option to check it, or “New questions” for another set.
Percentages practice
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Q1.The price of an item changes from ৳900 to ৳1,260. What is the percentage change?
Show answer & explanation
Answer: C — 40% increase
Change = 360 on a base of 900: 360/900 × 100 = 40% increase. Always divide by the ORIGINAL value.
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Q2.What is 35% of 420?
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Answer: C — 147
35% of 420 = 35/100 × 420 = 147.
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Q3.The price of an item changes from ৳400 to ৳432. What is the percentage change?
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Answer: A — 8% increase
Change = 32 on a base of 400: 32/400 × 100 = 8% increase. Always divide by the ORIGINAL value.
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Q4.The price of an item changes from ৳375 to ৳525. What is the percentage change?
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Answer: D — 40% increase
Change = 150 on a base of 375: 150/375 × 100 = 40% increase. Always divide by the ORIGINAL value.
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Q5.Two successive discounts of 15% and 5% are equivalent to a single discount of:
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Answer: D — 19.25%
Net discount = a + b − ab/100 = 15 + 5 − 15×5/100 = 19.25%.
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Q6.What is 12% of 680?
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Answer: D — 81.6
12% of 680 = 12/100 × 680 = 81.6.
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Q7.Two successive discounts of 25% and 12% are equivalent to a single discount of:
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Answer: D — 34%
Net discount = a + b − ab/100 = 25 + 12 − 25×12/100 = 34%.
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Q8.Two successive discounts of 25% and 5% are equivalent to a single discount of:
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Answer: C — 28.75%
Net discount = a + b − ab/100 = 25 + 5 − 25×5/100 = 28.75%.
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Q9.What is 60% of 460?
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Answer: D — 276
60% of 460 = 60/100 × 460 = 276.
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Q10.What is 45% of 540?
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Answer: B — 243
45% of 540 = 45/100 × 540 = 243.
How to approach percentages questions
Convert percentages to fractions you know by heart (12.5% = 1/8, 37.5% = 3/8, 16.67% = 1/6) and always divide a change by the ORIGINAL value. Two successive changes of a% and b% combine to a + b + ab/100.
About BCS Preliminary
Bangladesh Civil Service Preliminary Test — conducted by Bangladesh Public Service Commission (BPSC). The preliminary screening test for Bangladesh’s civil service cadres.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
BCS Preliminary practice topics
| Topic | Section | Question source |
|---|---|---|
| World General Knowledge | General awareness | Question bank |
| English Grammar | English | Question bank |
| Percentages | Quantitative aptitude | Calculated (new numbers every set) |
| Logical Reasoning | Reasoning | Calculated (new numbers every set) |
| Computer Awareness | Computer knowledge | Question bank |