Question

simple interest on a sum of money at rate of 10%per annum for 2 years is rs 50. the principal amount is

Answer 1

SI=P×R×T/100
P=100×SI/R×T
P=100×50/10×2
P=250

Answer 2

SI =PRT/100
Acc. To question:
SI=50
R=10
T=2
So,P=Si×100/RT
P=50×100/10×2
P=250
Now ,A=P+SI
So,A=250+50=300
So,amount=300
Principal=250