Question

How much time will it take for an amount of ₹ 450 to yield an interest of ₹ 81 at 4.5% per annum simple interest?

• A. 5 years
• B. 4 years
• C. 6 years
• D. 3 years

Answer 1

The correct option is B

4 years

$\text{Let the time taken be}t\text{years.}$

$\text{Simple Interest}=\frac{Principal\times Rate\times Time}{100}$

$\text{Hence,}81=\frac{450\times 4.5\times t}{100}$

$\Rightarrow t=\frac{100\times 81}{450\times 4.5}=4\text{years}$