Question

I invested a certain sum of money in a bank which gives Simple Interest. The amount grew to Rs. 240 at end of 2 yrs. I waited for another 3 yrs and got a final amount as Rs. 300. What was the principal amount that I invested at the beginning?

Answer 1

$Answer:-$

$Amount \: \: at \: \: the \: \: End \: \: Of \: 2 \: \: Years = ₹240$

$Amount \: \: At \: \: The \: \: End \: \: Of \: \: 5 \: \: years = ₹ 300$

$difference \: \: in \: \: amount \: \: for \: \: time \: \: period \: \: of \: \: 3 \: \: years = ₹ 60$

$annual \: \: intrest \: \: earned = 60\3 =₹ 20$

$prinicipal \: \: amount \: \: invested \: \: at \: \: the \: \: beginning \: \: = 240 - 2 \times 20 =₹ 200$

NOBITA221