Question

A certain sum becomes 2356 in 3 years and 2660 in 5 years on simple interest. What is the value of the sum?

• A. 1800
• B. 1880
• C. 1900
• D. 1980

Answer 1

Answer: (C)

1900

Answer 2

The difference in interest for two years is $2660 - 2356 = 304$, so the interest for 1 year is 152. The interest for 3 years is $152 \times 3 = 456$. The principal is $2356 - 456 = 1900$.