Percentage - Quantitative Aptitude (MCQ) questions for Q. 101
Q. A man invests 1/3rd of his income at 7%, 1/4th at 8% and the remainder of his income at 10%. If the annual profit is Rs 561. What was the initial capital?- Published on 15 Jun 15a. Rs 7500
b. Rs 6600
c. Rs 4500
d. Rs 3000
ANSWER: Rs 6600
Let initial amount that the man invests be A
Let x be the capital
=> Profit on 1st investment + Profit on 2nd investment + Profit on 3rd investment
=> S.I. = P X R X T
=> Remainder of capital = 1 - 1/3 - 1/4 = 5/12x (x being the capital)
=> a*1/3 *7/100 + 1/4 *a * 8/100 + 5x/12*a* 10/100 = 561
Therefore, a = 6600
