Question

a lent 5000 to b for2yearsand3000toc for4years on simple intrest at the

Answer 1

1st case
Principle=Rs.5,000
Time=2yrs
Rate=R%

S I =(Principle ×rate ×time)/100
SI=(5000×R×2)/100
SI=100R


2nd case

Principle=3000
Time=4yrs
Rate=R%

SI=(3000×4×R)/100
SI=120R


NOW, according to que.

120R+100R=2200
220R=2200
R=2200/220
R=10



Hence the rate of interest per annum=10%