Sakshi invests a part of Rs. 12,000 in 12% stock at Rs. 120 and the remainder in 15% stock at Rs. 125. If his total dividend per annum is Rs. 1360, how much does he invest in 12% stock at Rs. 120?	Choose the most appropriate option.
A) Rs. 4000	B) Rs. 4500	C) Rs. 5500	D) Rs. 6000	E) Rs. 6500
Let investment in 12% stock be Rs. x.   Then, investment in 15% stock = Rs. (12000 - x).   12/120 * x + 15/125 * (12000- x) = 1360   x/10 + 3/25(12000-x) = 1360   5x + 72000 - 6x = 1360 x 50   x = 4000.   Rs. 4000nswer = Rs. 4000
<result>A</result>
Sakshi invests a part of Rs. 12,000 in 12% stock at Rs. 120 and the remainder in 15% stock at Rs. 125. If his total dividend per annum is Rs. 1360, how much does he invest in 12% stock at Rs. 120?