Question

A certain sum at simple interest amounts to Rs1350 in 5 years to Rs1620 in 8years .What is the sum?​

Answer 1

Answer:

RS.900

Step-by-step explanation:

Given, A1 = RS.1350, A2 = RS. 1620

T1 =5yr and T2 = 8yr

Let principal amount be RS. P.

In time = 8-5=3yr

Simple interest will be

1620 - 1350 = RS.270

R= (A1−A2)×100A1T2−A2T1

= (1620−1350)×100(1350×8−1620×5)

= 270×10010800−8100=270002700

=> R=10%

P=SI×100R×T=270×10010×3=RS.900