Question

A certain sum & its interest in 4 years becomes Rs 480. If interest is 1/5 of the principle, find the Principle & Rate % p.a.

Answer 1

Answer:

principle =400 R=5%

Step-by-step explanation:

let sum(principle) be x and interest is 1/5*x

Amount=sum+interest

480=x+x/5

x=400(principle)

Interest =400/5=80

SI=PTR/100

80=400*4*r/100

by solving r=5%