Question
If the simple interest on a certain sum of money is 4/25th of the sum and the rate percent equals the number of years, then the rate of interest per annum is:
Answer: Option B
- Let the principal be Rs. x, then the simple interest (I) = 4 x. 25 Let the rate of interest per annum be r% then time (T) = r years 100 x 4 x R = 100 x I r = 25 P x T x x r r2 = 400 or r = 20 = 4% 25 5
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- Let the principal be Rs. x, then the simple interest (I) = 4 x. 25 Let the rate of interest per annum be r% then time (T) = r years 100 x 4 x R = 100 x I r = 25 P x T x x r r2 = 400 or r = 20 = 4% 25 5
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