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← Index: Simple & Compound Interest — Complete Exam GuideChapter 18
Study Guide · Chapter 18

5. Practice Question Set A — Basic Level

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This set mirrors the direct, formula-plug-in style typically seen in SSC CGL Tier-I, CHSL, MTS, and RRB NTPC CBT-1. None of these should take more than 30-40 seconds each once the relevant formula is recalled correctly; if you are spending longer, revisit the corresponding sub-section in Section 2 before attempting Set B. Attempt all 20 with pen and paper before checking the answer key, and time yourself — this entire set should be completable within 11 minutes by a well-prepared aspirant.

  1. Find the SI on Rs. 7,500 at 8% p.a. for 4 years. (Topic: Basic SI)
    1. Rs. 2,000 (b) Rs. 2,200 (c) Rs. 2,400 (d) Rs. 2,500
  2. A sum of Rs. 6,000 is invested at 6% p.a. simple interest. Find the amount after 2 years. (Topic: SI – Amount)
    1. Rs. 6,600 (b) Rs. 6,660 (c) Rs. 6,700 (d) Rs. 6,720
  3. A sum of Rs. 4,000 earns an SI of Rs. 960 in 4 years. Find the rate of interest. (Topic: SI – Find Rate)
    1. 5% (b) 6% (c) 7% (d) 8%
  4. At 5% p.a. simple interest, a sum earns Rs. 1,500 interest in 6 years. Find the sum. (Topic: SI – Find Principal)
    1. Rs. 4,500 (b) Rs. 5,000 (c) Rs. 5,500 (d) Rs. 6,000
  5. A sum of Rs. 5,000 amounts to Rs. 6,500 in 5 years at simple interest. Find the rate of interest. (Topic: SI – Find Rate from Amount)
    1. 5% (b) 6% (c) 7% (d) 8%
  6. Find the compound interest on Rs. 12,000 at 10% p.a. for 2 years, compounded annually. (Topic: Basic CI)
    1. Rs. 2,400 (b) Rs. 2,500 (c) Rs. 2,520 (d) Rs. 2,600
  7. Find the CI on Rs. 20,000 at 5% p.a. for 2 years. (Topic: Basic CI)
    1. Rs. 2,000 (b) Rs. 2,025 (c) Rs. 2,050 (d) Rs. 2,100
  8. Find the CI on Rs. 8,000 at 10% p.a. for 3 years, compounded annually. (Topic: CI – 3 years)
    1. Rs. 2,480 (b) Rs. 2,584 (c) Rs. 2,648 (d) Rs. 2,700
  9. The difference between CI and SI on Rs. 15,000 for 2 years at 4% p.a. is: (Topic: CI–SI Difference, 2 yrs)
    1. Rs. 20 (b) Rs. 24 (c) Rs. 28 (d) Rs. 30
  10. The difference between CI and SI on Rs. 8,000 for 2 years at 5% p.a. is: (Topic: CI–SI Difference, 2 yrs)
    1. Rs. 18 (b) Rs. 20 (c) Rs. 22 (d) Rs. 25
  11. Rs. 10,000 is invested at 20% p.a., compounded half-yearly, for 1 year. Find the amount. (Topic: CI Half-Yearly)
    1. Rs. 11,900 (b) Rs. 12,000 (c) Rs. 12,100 (d) Rs. 12,200
  12. Find the amount on Rs. 16,000 at 10% p.a. compound interest for 2 years. (Topic: CI – Amount)
    1. Rs. 19,200 (b) Rs. 19,360 (c) Rs. 19,400 (d) Rs. 19,500
  13. Find the difference between CI and SI on Rs. 2,000 for 2 years at 10% p.a. (Topic: CI–SI Difference)
    1. Rs. 15 (b) Rs. 18 (c) Rs. 20 (d) Rs. 22
  14. A sum of Rs. 9,600 earns Rs. 2,304 as simple interest over 4 years. Find the rate percent. (Topic: SI – Find Rate)
    1. 5% (b) 6% (c) 7% (d) 7.5%
  15. Find the compound interest on Rs. 6,250 for 2 years at 8% p.a., compounded annually. (Topic: CI – 2 years)
    1. Rs. 1,000 (b) Rs. 1,020 (c) Rs. 1,040 (d) Rs. 1,060
  16. A sum amounts to Rs. 7,440 in 4 years at 6% p.a. simple interest. Find the sum. (Topic: SI – Find Principal from Amount)
    1. Rs. 5,800 (b) Rs. 5,900 (c) Rs. 6,000 (d) Rs. 6,100
  17. Find the compound interest on Rs. 9,000 at 20% p.a. for 2 years, compounded annually. (Topic: Basic CI)
    1. Rs. 3,780 (b) Rs. 3,860 (c) Rs. 3,960 (d) Rs. 4,040
  18. The difference between CI and SI on a sum for 2 years at 15% p.a. is Rs. 45. Find the sum. (Topic: CI–SI Difference – Find Sum)
    1. Rs. 1,800 (b) Rs. 2,000 (c) Rs. 2,200 (d) Rs. 2,400
  19. Rs. 6,400 is invested at 25% p.a., compounded half-yearly, for 1 year. Find the compound interest. (Topic: CI Half-Yearly)
    1. Rs. 1,600 (b) Rs. 1,650 (c) Rs. 1,700 (d) Rs. 1,750
  20. In how many years will Rs. 3,000 yield a simple interest of Rs. 1,080 at 6% p.a.? (Topic: SI – Find Time)
    1. 5 years (b) 6 years (c) 7 years (d) 8 years
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