4

# 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

3 : 4

3 : 5

4 : 5

16 : 15

For an income Re. 1 in 12% stock at 120, investment = Rs. $\frac{120}{12}$ = Rs. 10.
Ratio of investments = $\frac{32}{3}$ : 10 = 32 : 30 = 16 : 15.