Question
Amit invested Rs. β10xβ in scheme βAβ offering
simple interest of 25% p.a. and reinvested the interest earned from scheme βAβ at the end of 4 years in scheme βBβ offering compound interest of 20% p.a. compounded annually. If total amount received from scheme βBβ after 2 years is Rs. 8640, then find the value of β90xβ.Solution
According to question; 1.44 Γ {0.25 Γ 4 Γ 10x} = 8640 => {0.25 Γ 4 Γ 5x} = 6000 => x = 600 So, 90x = 90 Γ 600 = 54000
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