Question

19. in a family of four members, the age of daughter is
20 years. The sum of the ages of father, mother and
daughter is 110 years. The ratio of age of son and
daughter is 3 4. Which of the following can be
found using the above data?
(A The ratio of ages of father and mother
(B) The age of mother
(C) The sum of the ages of the family members.
(D) The difference between the sum of the ages of
father and mother together and the age of son.
​

Answer 1

age of mother.

age of family 20,110'3 4.

Answer 2

Answer:

Using the above data we can find out

C) The sum of the ages of the family members.

D) The difference between the sum of the ages of father and mother together and the age of son.

Step-by-step explanation:

According to the above data:

1. The daughter's age is 20 years.

2. The son's age is-

x : 20 :: 3 : 4

=> x = 15

3. The sum of the ages of all the family members is 110

=> 15 + 20 + y = 110

=> y = 110 - 15 - 20 = 75

The sum of the parent's age is 75.

4. (Option D) 75 - 15 = 60

5. As there is nothing related to the parent's age in the data, we can not find the first 2.