Question

a certain sum of money at c.p. becomes Rs. 7396 in two years and Rs. 7950.70 in three years. find the rate of interest?

Answer 1

2nd year 3rd year amount difference is equal to one year interest. so take 2nd year amount as principle and difference is either S.I or C.I (since for single year SI=CI)
r= 7.5%