Question

At what rate percent will 1500 amount to 2400 in 4 years

Answer 1

Pricipal = 1500

Amount = 2400

SI = A - P

= 2400 - 1500 = 900

Time = 4 years

R = 100 × SI / P × T

= 100×900/1500×4

= 15

Means R = 15%

Answer 2

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Let sum = x

x +(x*4*15)/100= 2400

x+6x/10=2400

16x= 24000

x= 1500

Or R = 15%