CBSE - Aptitude Mathematics

Five years ago, the average age of M, N, 0 and P was 45 years. With Q joining them now, the average of all the five is 49 years. The age of Q (in years) is (1) 25 (2) 40 . (3) 45 (4) 49

A certain sum borrowed at 5% compound interest is to be paid back in two equal annual installments of Rs.882 each. The sum borrowed is 1. Rs.1,680 2. Rs.1,600 3. Rs.1,640 4. None of the above

If the side of a square increases by 40%, then the area of the square increases by 1. 16% 2. 116% 3. 96% 4. 40%

Mukesh and Suresh started a business, contributing Rs.6,000 and Rs.2,000 respectively. After 6 months, Suresh contributed an additional sum of Rs.5,000. The profit at the end of the year was Rs.1,400. Then, Suresh's share of the profit would be 1. Rs.600 2. Rs.800 3. Rs.700 4. Rs.1,050

A sum of money doubles itself in 4 years at compound interest. It will become eight times at the same rate in -- years. 1. 8 2. 12 3. 16 4. None of the above