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_________?

A. 3:4
B. 3:5
C. 4:5
D. 16:15
For an income of Re. 1 in 9% stock at 96,investments
= Rs. (96 / 9).
= Rs.(32/3).
For an income of Re.1 in 12% stock at 120,investments
=Rs.(120/12 )
= Rs.10.
Ratio of investments= 32/3:10=32 : 30 = 16:25.