Question

A sum of Rs 1550 was lent partly at 5% and partly at 8% p.a. simple interest . The total interest received after 3 years was Rs 300 . The ratio of the money lent at 5% to that of lent at 8% is----

Answer 1

Let partial amount at 5% be x
And at 8%=(1550-x)
So intrest for 3 year
X*5*3/100+(1550-x)*8*3/100=300
X*5/100+(1550-x)*8/100=300/3

5x+8(1550-x)=10000
5x+12400-8x=10000
3x=2400
X=800

Needed ratio =>x:(1550-x) =800:750
16:15