What is the compound interest on ₹2,800 for 2 years at 10% per annum, compounded annually?
- A₹560
- B₹588
- C₹646.80
- D₹868
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Answer: (B) ₹588
CI = P[(1 + R/100)² − 1] = ₹588.
DRDO CEPTAM Simple & Compound Interest Questions with Answers & Explanations
20 Simple & Compound Interest questions from the Quantitative Ability section of DRDO CEPTAM, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.
What is the simple interest on ₹4,000 at 12% per annum for 2 years?
- A₹1,056
- B₹480
- C₹1,440
- D₹960
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Answer: (D) ₹960
SI = P × R × T / 100 = 4000 × 12 × 2 / 100 = ₹960.
What is the compound interest on ₹3,400 for 2 years at 10% per annum, compounded annually?
- A₹1,054
- B₹714
- C₹785.40
- D₹680
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Answer: (B) ₹714
CI = P[(1 + R/100)² − 1] = ₹714.
What is the simple interest on ₹14,000 at 4% per annum for 5 years?
- A₹560
- B₹3,080
- C₹2,240
- D₹2,800
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Answer: (D) ₹2,800
SI = P × R × T / 100 = 14000 × 4 × 5 / 100 = ₹2,800.
What is the compound interest on ₹4,400 for 2 years at 5% per annum, compounded annually?
- A₹496.10
- B₹440
- C₹671
- D₹451
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Answer: (D) ₹451
CI = P[(1 + R/100)² − 1] = ₹451.
What is the simple interest on ₹21,000 at 6% per annum for 2 years?
- A₹3,780
- B₹2,772
- C₹2,520
- D₹1,260
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Answer: (C) ₹2,520
SI = P × R × T / 100 = 21000 × 6 × 2 / 100 = ₹2,520.
What is the simple interest on ₹12,000 at 8% per annum for 3 years?
- A₹960
- B₹3,840
- C₹2,880
- D₹1,920
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Answer: (C) ₹2,880
SI = P × R × T / 100 = 12000 × 8 × 3 / 100 = ₹2,880.
What is the difference between compound interest and simple interest on ₹1,200 for 2 years at 10% per annum?
- A₹12
- B₹18
- C₹120
- D₹24
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Answer: (A) ₹12
For 2 years, CI − SI = P × (R/100)² = ₹12.
What is the simple interest on ₹2,500 at 12% per annum for 3 years?
- A₹600
- B₹900
- C₹300
- D₹990
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Answer: (B) ₹900
SI = P × R × T / 100 = 2500 × 12 × 3 / 100 = ₹900.
What is the compound interest on ₹2,800 for 2 years at 20% per annum, compounded annually?
- A₹1,204
- B₹1,355.20
- C₹1,792
- D₹1,232
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Answer: (D) ₹1,232
CI = P[(1 + R/100)² − 1] = ₹1,232.
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Timed Quantitative Ability test · 25 questions · instant rank
What is the simple interest on ₹6,500 at 5% per annum for 5 years?
- A₹325
- B₹1,625
- C₹1,787.50
- D₹1,950
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Answer: (B) ₹1,625
SI = P × R × T / 100 = 6500 × 5 × 5 / 100 = ₹1,625.
What is the compound interest on ₹3,200 for 2 years at 5% per annum, compounded annually?
- A₹360.80
- B₹296
- C₹488
- D₹328
Show answer
Answer: (D) ₹328
CI = P[(1 + R/100)² − 1] = ₹328.
What is the simple interest on ₹22,500 at 8% per annum for 6 years?
- A₹11,880
- B₹9,000
- C₹10,800
- D₹1,800
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Answer: (C) ₹10,800
SI = P × R × T / 100 = 22500 × 8 × 6 / 100 = ₹10,800.
What is the difference between compound interest and simple interest on ₹2,600 for 2 years at 20% per annum?
- A₹114
- B₹156
- C₹104
- D₹208
Show answer
Answer: (C) ₹104
For 2 years, CI − SI = P × (R/100)² = ₹104.
What is the simple interest on ₹29,500 at 12% per annum for 2 years?
- A₹7,080
- B₹3,540
- C₹10,620
- D₹7,788
Show answer
Answer: (A) ₹7,080
SI = P × R × T / 100 = 29500 × 12 × 2 / 100 = ₹7,080.
What is the compound interest on ₹1,300 for 2 years at 10% per annum, compounded annually?
- A₹300.30
- B₹273
- C₹403
- D₹260
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Answer: (B) ₹273
CI = P[(1 + R/100)² − 1] = ₹273.
What is the simple interest on ₹3,000 at 10% per annum for 3 years?
- A₹990
- B₹300
- C₹1,200
- D₹900
Show answer
Answer: (D) ₹900
SI = P × R × T / 100 = 3000 × 10 × 3 / 100 = ₹900.
What is the simple interest on ₹3,500 at 5% per annum for 4 years?
- A₹875
- B₹175
- C₹700
- D₹770
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Answer: (C) ₹700
SI = P × R × T / 100 = 3500 × 5 × 4 / 100 = ₹700.
What is the difference between compound interest and simple interest on ₹800 for 2 years at 20% per annum?
- A₹64
- B₹42
- C₹48
- D₹32
Show answer
Answer: (D) ₹32
For 2 years, CI − SI = P × (R/100)² = ₹32.
What is the simple interest on ₹9,000 at 4% per annum for 5 years?
- A₹1,980
- B₹1,800
- C₹2,160
- D₹1,440
Show answer
Answer: (B) ₹1,800
SI = P × R × T / 100 = 9000 × 4 × 5 / 100 = ₹1,800.
These are RankerClub practice questions written in the DRDO CEPTAM pattern. They are not official SSC/IBPS/RRB papers.
