A sum of Rs. 12,800 is invested separately at 15% per annum and the r…

Question

A sum of Rs. 12,800 is invested separately 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. 5,085, then how much money was invested at 15% per annum?

Accepted Answer

Option D. Rs. 5,300. Answer & Solution Answer: Option D Solution: & Sum = 12,800 & I^ st part = x & I I^ nd part = ( 12,800 - x ) & x × 15100 + ( 12,800 - x ) 12100 = 5,0853 & 3x100 + 128 × 12 = 1,695 & 3x100 = 1,695 - 1,536 & 3x100 = 159 & then x = 5,300