What is the simple interest on ₹16,000 at 5% per annum for 6 years?
- A₹4,800
- B₹5,280
- C₹5,600
- D₹800
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Answer: (A) ₹4,800
SI = P × R × T / 100 = 16000 × 5 × 6 / 100 = ₹4,800.
ISRO Scientist Simple & Compound Interest Questions with Answers & Explanations
17 Simple & Compound Interest questions from the Quantitative Aptitude section of ISRO Scientist, 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 difference between compound interest and simple interest on ₹2,500 for 2 years at 10% per annum?
- A₹35
- B₹250
- C₹37.50
- D₹25
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Answer: (D) ₹25
For 2 years, CI − SI = P × (R/100)² = ₹25.
What is the simple interest on ₹12,000 at 10% per annum for 2 years?
- A₹2,640
- B₹1,200
- C₹3,600
- D₹2,400
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Answer: (D) ₹2,400
SI = P × R × T / 100 = 12000 × 10 × 2 / 100 = ₹2,400.
What is the compound interest on ₹12,400 for 2 years at 5% per annum, compounded annually?
- A₹1,398.10
- B₹1,271
- C₹1,147
- D₹1,891
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Answer: (B) ₹1,271
CI = P[(1 + R/100)² − 1] = ₹1,271.
What is the simple interest on ₹3,500 at 10% per annum for 3 years?
- A₹1,050
- B₹1,400
- C₹1,155
- D₹700
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Answer: (A) ₹1,050
SI = P × R × T / 100 = 3500 × 10 × 3 / 100 = ₹1,050.
What is the difference between compound interest and simple interest on ₹1,300 for 2 years at 10% per annum?
- A₹13
- B₹23
- C₹26
- D₹130
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Answer: (A) ₹13
For 2 years, CI − SI = P × (R/100)² = ₹13.
What is the simple interest on ₹28,500 at 6% per annum for 2 years?
- A₹5,130
- B₹3,762
- C₹3,420
- D₹1,710
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Answer: (C) ₹3,420
SI = P × R × T / 100 = 28500 × 6 × 2 / 100 = ₹3,420.
What is the difference between compound interest and simple interest on ₹5,200 for 2 years at 5% per annum?
- A₹19.50
- B₹260
- C₹26
- D₹13
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Answer: (D) ₹13
For 2 years, CI − SI = P × (R/100)² = ₹13.
What is the simple interest on ₹8,500 at 10% per annum for 5 years?
- A₹4,250
- B₹3,400
- C₹4,675
- D₹5,100
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Answer: (A) ₹4,250
SI = P × R × T / 100 = 8500 × 10 × 5 / 100 = ₹4,250.
What is the compound interest on ₹2,700 for 2 years at 10% per annum, compounded annually?
- A₹623.70
- B₹837
- C₹567
- D₹540
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Answer: (C) ₹567
CI = P[(1 + R/100)² − 1] = ₹567.
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Timed Quantitative Aptitude test · 15 questions · instant rank
What is the simple interest on ₹15,000 at 4% per annum for 4 years?
- A₹1,800
- B₹2,400
- C₹600
- D₹3,000
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Answer: (B) ₹2,400
SI = P × R × T / 100 = 15000 × 4 × 4 / 100 = ₹2,400.
What is the compound interest on ₹1,400 for 2 years at 20% per annum, compounded annually?
- A₹896
- B₹616
- C₹602
- D₹677.60
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Answer: (B) ₹616
CI = P[(1 + R/100)² − 1] = ₹616.
What is the simple interest on ₹16,000 at 12% per annum for 3 years?
- A₹5,760
- B₹7,680
- C₹6,336
- D₹3,840
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Answer: (A) ₹5,760
SI = P × R × T / 100 = 16000 × 12 × 3 / 100 = ₹5,760.
What is the compound interest on ₹3,500 for 2 years at 10% per annum, compounded annually?
- A₹700
- B₹808.50
- C₹1,085
- D₹735
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Answer: (D) ₹735
CI = P[(1 + R/100)² − 1] = ₹735.
What is the simple interest on ₹28,000 at 4% per annum for 2 years?
- A₹1,120
- B₹2,464
- C₹3,360
- D₹2,240
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Answer: (D) ₹2,240
SI = P × R × T / 100 = 28000 × 4 × 2 / 100 = ₹2,240.
What is the compound interest on ₹1,500 for 2 years at 10% per annum, compounded annually?
- A₹346.50
- B₹300
- C₹465
- D₹315
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Answer: (D) ₹315
CI = P[(1 + R/100)² − 1] = ₹315.
What is the difference between compound interest and simple interest on ₹8,800 for 2 years at 5% per annum?
- A₹44
- B₹22
- C₹33
- D₹32
Show answer
Answer: (B) ₹22
For 2 years, CI − SI = P × (R/100)² = ₹22.
These are RankerClub practice questions written in the ISRO Scientist pattern. They are not official SSC/IBPS/RRB papers.
