PYQ Vault

SI: time, rate or principal from principal, amount (or interest) and the other

This type of question, asked 13 times: 18 Jul 2023 S3, 20 Jul 2023 S3, 20 Jul 2023 S4, 25 Jul 2023 S3, 26 Jul 2023 S2, 27 Jul 2023 S3, 11 Sep 2024 S2, 17 Sep 2024 S2, 17 Sep 2024 S3, 19 Sep 2024 S2, 24 Sep 2024 S1, 26 Sep 2024 S2, 19 Sep 2025 S2. All 13 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    18 Jul 2023 S3

    74
    In how many years will a sum of ₹9,500 amount to ₹11,780 at the rate of 8% per annum at simple interest?

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  2. Question 2

    20 Jul 2023 S3

    57
    A person invests ₹9,840 at 5% per annum simple interest to obtain a total amount of ₹12,300. For how many years did he invest the sum?

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  3. Question 3

    20 Jul 2023 S4

    74
    A sum of ₹30,000 becomes ₹38,400 after being invested at a simple interest of 8%8\% per annum in how many years?

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  4. Question 4

    25 Jul 2023 S3

    63
    The rate of simple interest for which ₹9,000 will amount to ₹10,200 in 4 years is:

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  5. Question 5

    26 Jul 2023 S2

    66
    The interest earned on ₹21,000 in 3 years at simple interest is ₹6,400. What is the rate of interest per annum?

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  6. Question 6

    27 Jul 2023 S3

    74
    In what time will ₹3,720 amount to ₹5,282.4 at 12% simple interest per annum?

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  7. Question 7

    11 Sep 2024 S2

    75
    How many years will it take for ₹8,400 to amount to ₹11,928 at a simple interest rate of 7% per annum?

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  8. Question 8

    17 Sep 2024 S2

    71
    What is the rate of interest per annum for simple interest at which ₹1,040 amounts to ₹1,230 in 1121\frac{1}{2} years?

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  9. Question 9

    17 Sep 2024 S3

    75
    In how many years will ₹7,200 amount to ₹8,928 at a simple interest rate of 8%8\% per annum?

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  10. Question 10

    19 Sep 2024 S2

    75
    A sum of ₹1,456, when invested for ten years, amounts to ₹2,366 on maturity. Find the rate of simple interest per annum that was to be paid on the sum invested.

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  11. Question 11

    24 Sep 2024 S1

    67
    In how much time (in years, rounded off to 2 decimal places) will ₹10,800 amount to ₹24,800 if invested at simple interest at the rate of 15.5%15.5\% per annum?

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  12. Question 12

    26 Sep 2024 S2

    60
    What principal would amount to ₹21,420 in 2 years at the rate of 9.5%9.5\% p.a. simple interest?

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  13. Question 13

    19 Sep 2025 S2

    58
    At what rate of simple interest will ₹2,000 become ₹2,520 in 4 years?

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