Question

principal=5400, amount=6210,t=3years find rate of interest and simple interest.

Answer 1

p=5400
A=6210
S.I=6210-5400=810
S.I=P*R*T/100
810=3*5400*R/100
R=810*100/5400*3
R=5%ans

Answer 2

P = 5400
Amount = 6210
T = 3 years
I = A - P = 6210 - 5400 = 810
R = (100 × I) / P× T
R = 100 × 810
-------------- = 5 %
5400 × 3