A sum of Rs. 12,800 is invested partly at 15% per annum and the remaining at 12% per annum simple interest. If the total interest at the end of 3 years is Rs. 5085. Then how much money was invested at 15% per annum.

Options

A. Rs. 5,200
B. Rs. 7,500
C. Rs. 5,800
D. Rs. 5,300

Answer

D