A invested some money in 8% stock at 96.If B wants to invest in an equally good 10% stock ,he must purchase a stock worth of :  Choose the correct choice from the following options.
A) Rs. 120
B) Rs. 60
C) Rs. 128
D) Rs. 130
E) Rs. 140
Solution   For an income of Rs. 8, investment = Rs. 96.   For an income of Rs. 10, investment = Rs.(96/8x10) = Rs. 120   Rs. 120nswer Rs. 120
<result>A</result>
A invested some money in 8% stock at 96.If B wants to invest in an equally good 10% stock ,he must purchase a stock worth of :