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Practice Test 8
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SSC CGL Simple Interest Practice Test 8

15 SSC CGL simple interest questions with chapter-wise explanations and exam-style options.

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SSC CGL Practice Session

SSC CGL Simple Interest Practice Test 8

15 SSC CGL simple interest questions with chapter-wise explanations and exam-style options.

Questions
15
Marking
+2 correct, -0.5 wrong
Format
15-question ad-supported session
Preview all 15 questions in SSC CGL Simple Interest Practice Test 8 (no login required)
  1. Simple Interest

    1. In how many years will ₹800 at 5% SI double?

    • A. 10
    • B. 15
    • C. 20 (Correct)
    • D. 25

    Explanation: SI=P → Prt/100=P → t=100/5=20 years.

  2. Simple Interest

    2. CI on ₹3000 at 10% per year for 1.5 years compounded half-yearly:

    • A. ₹459.75
    • B. ₹463.60
    • C. ₹472.88 (Correct)
    • D. ₹480.00

    Explanation: Rate per half-year = 5% and number of half-years = 3. Amount = 3000 x 1.05^3 = ₹3472.88, so CI = ₹472.88.

  3. Simple Interest

    3. A sum at SI doubles in 8 years. Rate of interest:

    • A. 10%
    • B. 12%
    • C. 12.5% (Correct)
    • D. 15%

    Explanation: SI=P. P×r×8/100=P → r=100/8=12.5%.

  4. Simple Interest

    4. What principal amounts to ₹2662 in 3 years at 10% CI?

    • A. ₹1800
    • B. ₹1900
    • C. ₹2000 (Correct)
    • D. ₹2100

    Explanation: P×1.1³=2662 → P×1.331=2662 → P=2000.

  5. Simple Interest

    5. Interest on ₹5000 at 8% for 9 months:

    • A. ₹250
    • B. ₹300 (Correct)
    • C. ₹350
    • D. ₹400

    Explanation: SI=5000×8×(9/12)/100=5000×8×0.75/100=300.

  6. Simple Interest

    6. CI and SI on ₹10000 at r% for 2 years differ by ₹100. Rate r is:

    • A. 8%
    • B. 9%
    • C. 10% (Correct)
    • D. 12%

    Explanation: Diff=P×r²/100²=100. 10000×r²/10000=100 → r²=100 → r=10%.

  7. Simple Interest

    7. Amount on ₹3500 at 6% SI for 2 years:

    • A. ₹3800
    • B. ₹3900
    • C. ₹3920 (Correct)
    • D. ₹3950

    Explanation: SI=3500×6×2/100=420. Amount=3920.

  8. Simple Interest

    8. In how many years will ₹6250 amount to ₹7290 at 8% CI?

    • A. 1
    • B. 2 (Correct)
    • C. 3
    • D. 4

    Explanation: 6250×1.08²=6250×1.1664=7290. So 2 years.

  9. Simple Interest

    9. A lends ₹2500 partly at 3% and the rest at 5% simple interest. Total interest in 2 years is ₹210. Amount lent at 5% is:

    • A. ₹1000
    • B. ₹1200
    • C. ₹1500 (Correct)
    • D. ₹1800

    Explanation: Let ₹x be lent at 5%. Then interest = (2500 - x) x 3 x 2/100 + x x 5 x 2/100 = 210. This gives 150 + 0.04x = 210, so x = 1500.

  10. Simple Interest

    10. SI on ₹6000 for 2 years is ₹840. Rate is:

    • A. 5%
    • B. 6%
    • C. 7% (Correct)
    • D. 8%

    Explanation: R=840×100/(6000×2)=7%.

  11. Simple Interest

    11. CI on ₹1600 at 10% for 1 year compounded quarterly is approximately:

    • A. ₹162
    • B. ₹164
    • C. ₹166 (Correct)
    • D. ₹170

    Explanation: Rate per quarter=2.5%, n=4. A=1600×1.025⁴=1600×1.1038=1766.1. CI=166.1≈₹166.

  12. Simple Interest

    12. If SI on a sum is 1/9 of the sum in 2 years, rate is:

    • A. 5%
    • B. 5.5%
    • C. 5.56% (Correct)
    • D. 6%

    Explanation: SI=P/9. P×r×2/100=P/9 → r=100/18=5.56%.

  13. Simple Interest

    13. Amount on ₹12000 at 5% CI for 2 years:

    • A. ₹13200
    • B. ₹13230 (Correct)
    • C. ₹13320
    • D. ₹13500

    Explanation: A=12000×1.05²=12000×1.1025=13230.

  14. Simple Interest

    14. Time for ₹2000 to earn ₹400 SI at 10% per annum:

    • A. 1 year
    • B. 2 years (Correct)
    • C. 3 years
    • D. 4 years

    Explanation: T=400×100/(2000×10)=2 years.

  15. Simple Interest

    15. For 3 years at 20% per annum, the difference between CI and SI on ₹5000 is:

    • A. ₹440
    • B. ₹540
    • C. ₹640 (Correct)
    • D. ₹740

    Explanation: CI = 5000 x (1.2^3 - 1) = ₹3640 and SI = 5000 x 20 x 3/100 = ₹3000. Difference = ₹640.