Q. Rajinder invests a part of Rs. 12000 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?. [Hotel Mgt 1992]

1. Rs. 4500
2. Rs. 6000
3. Rs. 5500
4. Rs 4000