In order to obtain an income of Rs. 650 from 10% stock at Rs. 96, one must make an investment of :  Choices:
A) Rs. 3100
B) Rs. 6240
C) Rs. 6500
D) Rs. 9600
E) Rs. 9800
Solution   To obtain Rs. 10, investment = Rs. 96.   To obtain Rs. 650, investment = Rs.(96/10x650) = Rs. 6240.   Answer Rs. 6240
<result>B</result>
In order to obtain an income of Rs. 650 from 10% stock at Rs. 96, one must make an investment of :