A man invests some money partly in 9% stock at 96 and partly in 12% stock at 120.To obtain equal dividends from both,he must invest the money in the ratio : Choose the correct choice from the following answers:
A) 3 : 4
B) 3 : 5
C) 4 : 5
D) 16 : 15
E) None
Solution   For an income of Rs. 1 in 9% stock at 96, investment = Rs. (96/9)= Rs. 32/3 .   For an income of Rs. 1 in 12% stock at 120, investment = Rs.(120/12) = Rs. 10.   ∴ Ratio of investments = 32/3 :10 =32:30 = 16:15   Answer 16 : 15
<result>D</result>
A man invests some money partly in 9% stock at 96 and partly in 12% stock at 120.To obtain equal dividends from both,he must invest the money in the ratio :