Question

Inwhat time will money deposited in a bank double itself if the rate of interest is 25
?

Answer 1

let Principal = 100
amount = 200
interest = amount - principal
= 200 - 100
= 100
rate = 25%
therefore time = (interest × 100)/(principal × rate)
= (100 × 100)/(100 × 25)
= 1 × 4
= 4 years