A man invests some money partly in 15% stock at 105 and partly in 8% stock at 40.To obtain equal dividends from both,he must invest the money in the ratio :	Choose the correct choice from the following:  A) 3 : 4  B) 3 : 5  C) 7 : 5  D) 16 : 15  E) None
Solution   For an income of Rs. 1 in 15% stock at 105, investment = Rs. (105/15)= Rs. 7.   For an income of Rs. 1 in 8% stock at 40, investment = Rs.(40/8) = Rs. 5.   ∴ Ratio of investments = 7:5 =7:5   Answer 7 : 5
<result>C</result>
A man invests some money partly in 15% stock at 105 and partly in 8% stock at 40.To obtain equal dividends from both,he must invest the money in the ratio :