CBSE - Aptitude Mathematics

A woman has a certain number of mangoes. She sells one more than half the number to A, one more than half of the remainder to B and one more than half of what she has now left to C. Her stock is now sold. The total number was 1. 30 2. 14 3. 16 4. 44

If the annual decrease in the population of a city be 2 percent and the present number of inhabitants be 375000, what Will the population be 3 years hence (1) 362048 (2) 352947 (3) 152947 (4) NONE

Two numbers are in the ratio of 2 to 3, and if 9 be added to each, they are in the ratio of 3 to 4. The numbers are 1. 6 and 9 2. 18 and 27 3. 12 and 18 4. 8 and 12

The average age of boys in the class is twice the number of girls in the class. If the ratio of boys and. girls in the class of 36 be 5 : 1, what is the total of the ages (in years) of the boys in the class ? 1) 490 2) 196 3) 420 4) 360