A sum invested at 5% simple interest per annum grows to Tk. 504 in 4 years The same amount at 10% simple interest per annum in 212 years will grow to :

A sum invested at 5% simple interest per annum grows to Tk. 504 in 4 years The same amount at 10% simple interest per annum in 212 years will grow to : Correct Answer Tk. 525

F2F1 = p(1 + n2r2)p(1 + n1r1) = 1 + 2.5×.101 + 4×.05 = 1.251.2∴F2 = 1.251.2×F1 = 1.251.2×504 = 500
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