Question
Rs. βPβ invested at a rate of 10% p.a. compound
interest (compounded annually) amounts to Rs. 7744 at the end of 2 years. Find the simple interest earned at the end of 4 years if the same amount is invested at the same rate.Solution
According to question; 1.10 Γ 1.10 Γ P = 7744 Or, P = Rs. 6400 Desired interest = 0.1 Γ 4 Γ 6400 = Rs. 2560

