Question

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

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

Answer 1

The correct option is B

4 years

Let the time taken be $t$ years. Then,

P = ₹ 450, R = 4.5%, SI = ₹ 81

SI = $\frac{PTR}{100}$

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

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