# Find the rate of interest per annum :

A sum of money put out at compound interest amounts to 16900 in 2 years and to Rs. 17576 in 3 years. Find the rate of interest per annum.

- 4%
- 5%
- 10%
- 6%

**Answer: (1) 4%**

**Explanation:-**

The amount in 2 years = Rs. 16, 900

And, the amount in 3 years = Rs. 17, 576

Compound Interest in a year = 17, 576 – 16, 900

=Rs. 676

Then, 676 = 16, 900 x R/100

676 = 169 R

R = 676/169

X = 4 %

Then, the rate of interest per annum is 4 %.

Hence, the correct answer is option (1) 4%.