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If the ratio of the principal and amount...

If the ratio of the principal and amount (principal + interest) is 20 : 21, then the rate of interest per annum is

A

0.12

B

0.16

C

0.18

D

0.2

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UNITED BOOK HOUSE-Simple Interest -Exercise
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  2. Mr. Thomas invested an amount of ₨ 13,900 divided in two different sch...

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  3. Reena took a loan of ₨. 1200 with simple interest as many years as the...

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  4. An automobile financier claims to be lending money at simple interest,...

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  5. The simple interest on a certain sum at 5% per annum for 3 years and 4...

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  6. The simple interest on ₨ 7300 from 11 may, 1987 to 10 sep, 1987 (both ...

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  7. With a given rate of simple interest, the ratio of principal and amoun...

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  8. If the ratio of the principal and amount (principal + interest) is 20 ...

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  9. In how many years will a sum of money double itselt at 12% per annum?

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  10. If x, y, z are three sum of money such that y is the simple interest o...

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  11. The simple interest on a sum of money is 1/9 of the principal and the ...

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  12. A sum was lent at simple interest at a certain rate for 2 years. Had i...

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  13. A man loses ₨ 55.50 yearly when the annual rate of interest falls from...

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  14. A sum of money at simple interest triple itself in 15 years. It will b...

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  15. What is the present worth of ₨ 132 due in 2 years at 5% simple interes...

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  16. ₨ 800 becomes ₨ 956 in 3 years at a certain rate of simple interest. I...

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  17. If a sum of money doubles itself in 8 years at simple interest, the ra...

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  18. If A lends ₨ 3500 to B at 10% p.a. and B lends the same sum of C at 11...

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  19. Find the simple interest on ₨ 7000 at 50/3% for 9 months

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  20. Find the simple interest on the ₨ 2000 at 25/4% per annum for the peri...

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