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Q.
A sum of Rs.1550 was lent 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 lent at 8% is :
A.
5:8
B.
6:7
C.
16:15
D.
17:18
View Answer
Correct choice: C
Explanation:
let the sum lent at 5% be Rs.x and that lent at 8% be Rs.(1550-x). then, Interest on x at 5% for 3 years + interest on (1550-x) at 8% for 3 years = 300 x*5*3/100+(1500−x)*8*3/100=300 x=800 Required ratio = x : (1550-x) = 800 : (1550-800) = 800 : 750 = 16 : 15
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