Question

A certain sum of money at simple interest amounts to rs.1260 in 2 years and to rs.1350 in 5 years. The rate percent per annum is :

Answer 1

Where: A = P(1 + rt)

1260=p(1+2r)
1350=p(1+5r)

now dividing both eq

1350/1260=1+5r/1+2r

135(1+2r)=(1+5r)*126

135-126=630r-270r
9/360=r
r=0.25

so rate %is 25%