The sum of the age of mother and a mother and her daughter is 60 years. 12 years ago the mother was eight times as old as her daughter. How old is the daughter at present?

• 20 yr

• 28 yr

• 16 yr

• 16 yr

In one hour, a boat goes 12 km along the stream and 8km against the stream. The speed of the boat in still water is

• 12 km/h

• 11 km/h

• 10 km/h

• 10 km/h

The sum of the ages of two brothers, having a difference of 8yr between them, will double after 10 yr. What is the ratio of the age of the younger brother to that of the elder brother?

• 7 : 11

• 3 : 7

• 8 : 9 

• 8 : 9 

7 years ago, the ages (in years) of A and B were in the ratio 4 : 5; and 7 years hence they will be in the ratio 5 : 6. The present age of B is

• 56 years

• 63 years

• 70 years

• 70 years

Two numbers are such that their difference, their sum and their product are in the ratio of 1 : 7 : 24. The product of the numbers is

• 24

• 36

• 48

• 48

6.

The present ages of A and B are in the ratio 3 : 4. Ten years ago, this ratio was 4 : 7. The present age of A and B are respectively:

• 18 years, 24 years

• 21 years, 28 years

• 24 years, 32 years

• 24 years, 32 years

Ratio of A's age to B's age is 4 : 3. 'A' will be 26 years old after 6 years. The age of B now is:

• 2 years

• 12 years

• 21 years

• 15 years

The ratio of the ages of Ram and Rahim 10 yr ago was 1 : 3. The ratio of their ages 5 yr hence will be 2 : 3. Then, the ratio of their present ages is

• 1 : 2

• 3 : 5

• 3 : 4

• 2 : 5

18 yr ago, the ratio of A's age to B's age was 8 : 13. Their present ratios are 5 : 7. What is the present age of A?

• 70 yr

• 60 yr

• 40 yr

• 50 yr