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 lent at 8% is:	Pick:
A) 16 : 15
B) 15 : 16
C) 15 : 8
D) 8 : 15
E) 8 : 17
Explanation :   Let the partial amount at 5% be x and the partial amount at 8% be (1550-x)   Interest on x at 5% for 3 years + interest on (1550-x) at 8% for 3 years = 300   x × 5 × 3 /100+(1550-x) × 8 × 3 /100=300   x × 5 /100+(1550-x) ×8 /100=100   5x+8(1550−x)=10000   5x+12400−8x=10000   3x=2400   x=800   Required Ratio = x : (1550-x) = 800 : (1550-800) = 800 : 750 = 16 : 15   16 : 15nswer : Option 16 : 15
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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 lent at 8% is: