Future Value = Present Value x (1+Interest Rate)" Future Value, FV = Ro 20000 Value, PV = Ro 5000 14% = 0.14 n = period of Investment = number of years Ro 20000 = Ro 5000 X (1+0.14)" Present Interest Rate, i = Ro 20000 / Ro 5000 = (1.14)" 4 = 1.14h taking in on both sides of equation: In 4 = n x In 1.14 1.386294361 = n x 0.131028262 n = 1.386294361/0.131028262 = 10.58 years The period of Investment 10.58 years or 10 years & 7 months How we got 1.386294361 = nx 0.131028262 n = 1.386294361/0.131028262 = 10.58 years 6 11:23 PM