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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?

A. Rs. 4000

B. Rs. 4500

C. Rs. 5500

D. Rs. 6000

Correct Answer :

A. Rs. 4000


Let investment in 12% stock be Rs. x.
Then, investment in 15% stock = Rs. (12000 - x).
12120 × x + 15125 × (12000 - x) = 1360.
x10 + 325 (12000 - x) = 1360.
5x + 72000 - 6x = 1360 x 50
x = 4000.