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?

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Question:
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

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.