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?

Answer: Option A

Explanation:

Let investment in 12% stock be Rs. x.

Then, investment in 15% stock = Rs. (12000 - x).

	12	x x +	15	x (12000 - x) = 1360.
	120		125

	x	+	3	(12000 - x) = 1360.
	10		25

5x + 72000 - 6x = 1360 x 50

x = 4000.