Question

If compound interest on some for 2 years at 12.5 per annum is 510 the simple interest on the same some at the rate for same periode of time

Answer 1

Thank you for asking this question. But your question seems to be incomplete:

If the C.I. on a sum for 2 years at 12 1/2 % per annum is Rs. 510, the S.I. on the same sum at the same rate for the same period of time is   ?

A) Rs. 580 B) Rs. 480

C) Rs. 550 D) Rs. 470

Answer:

We will assume Rs. x be the sum

[X(1+(25/2x1000)² - X] = 510

X[9/8)² - 1] = 510

Sum = Rs . 1920

So the simple interest would be:

(1920 x 25 x 2) / ( 2 x 100)

= Rs. 480

Option B: 480 is the answer.