Question

If the simple interest on a certain sum of money for 3 years is three-tenth of the sum ,then find the rate of interest per annum.

Answer 1

Answer:

10% per annum

Explanation:

Let the Principal be P.

Simple Interest (SI) = 3/10 P

Time (T) = 3 years

Let the Rate of interest be R.

SI = PRT/100

3/10 P = P × R × 3 / 100

R = 10% per annum

Answer 2

Answer:

Refer to that picture for the answer..

Step-by-step explanation:

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