Question

A sum when reckoned at 7 1/2%per annum amount s to rs 3920 in 3year find the sum

Answer 1

This is ur ans hope it will help you in case of any doubt comment below

Answer 2

SI=(PRT)

R=7½ %=7.5 %=0.075

T=3yrs

S.I = Px0.075x3=

0.225P

Amount=P+si

3920=P+0.225P

3920=P(1+0.225)

3920=P(1.225)

3920/1.225=P

3200=P

P=sum= 3200