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 most appropriate option:  A) 3:4  B) 3:5  C) 4:5  D) 16:15  E) 12:13
For an income of $1 in 9% stock at 96, investment =$(96/9)=32/3   For an income of $1 in 12% stock at 120, investment =$(120/12)= 
<gadget id="calculator">(120/12)</gadget>
<output>10</output>
$10   Ratio of investment=32/3:10   =16:15   Option 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: