Compound Interest | Arithmetic aptitude | Discussion Page

The compound interest on Rs. 1800 at a10% per annum, for certain period of time is Rs. 378. Find the same time in years.

A) 2 Yrs

B) 3 Yrs

C) 5 yrs

D) 4 Yrs

$2\frac{1}{2}$ Yrs

Option A

$P=1800$ , $CI=378$

Time $=N$

$A$ $=1800+378$ $=2178$

$2178$ $=1800\left(1+\frac{10}{100}\right)^{N}$

N = 2 yrs

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