In order to obtain an income of Rs. 680 from 10% stock at Rs. 120, one must make an investment of  Choose the correct answer.
A) 5363	B) 8160	C) 2368	D) 1987	E) 2732
To obtain Rs. 10, investment   = Rs. 120.   To obtain Rs. 680, investment =   = Rs. 8160.   Answer: 8160
<result>B</result>
In order to obtain an income of Rs. 680 from 10% stock at Rs. 120, one must make an investment of