A person invested 2 rd of the capital at the rate of 6%, 1 th at 3 5 the rate of 10%, and the remaining at the rate of 15%. If his gets Rs. 6,00 as his total interest. Find its capital.

Explanation

Let the capital = 150x SI form 1st Part = 100x×6×1 100 = 6x SI from 2nd Part = 30x×10×1 100 = 3x Remaining Capital = 150x – 100x – 30x= 20x SI from 3rd Part = 20x×15×1 100 = 3x Total SI = 6x + 3x + 3x = 12x 12 x……………………..Rs. 600 x = Rs. 50 Capital=150 × 50 = Rs. 7500