Question

The ratio of the present age of father to that of son is 7:2. After 10 years their ages will be in the
ratio of 9:4. The present ages of the father is-
(A)35 years
(B) 49 years
(C) 16 years
(D) 40 years​

Answer 1

Answer:

Let the present ages of father and son be 7x and 2x

after 10 years:

father's age=7x+10

son's age=2x+10

ATQ,

7x+10:2x+10=9:4

=>28x+40=18x+90

=>10x=50

=>x=5

Thus, present age of father=7x=7*5=35years

Step-by-step explanation:

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