Question

The compound interest on Rs. $800$ for $2$ years at $5\%$ per annum is:

• A. Rs. $80$
• B. Rs. $82$
• C. Rs. $81$
• D. Rs. $41$

Answer 1

The correct option is B Rs. $82$

Principal $=$ Rs $800$
Time $=2$ years
Rate $=5\%$
$A=P{(1+\frac{R}{100})}^T$
$A=800{(1+\frac{5}{100})}^2$
$A=\frac{800\times 105\times 105}{100\times 100}$
$A=$ Rs $882$
$C.I.=A-P$
$C.I.=882-80=$ Rs $82$