Question

Mahima borrowed a certain sum at the rate of 15% per annum if she paid at the end of 2 years rupees 529 as interest compound annually find the sum he borrowed

Answer 1

Let the sum he borrowed be x

529=x{1+(15/100}^2

529=x(100+15/100)^2

529=x(115/100)^2

529=x(13225/10000)

529=x(529/400)

529×400=x×529

x=(529×400/529)

x=400