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 age of father is.
A)35years
B)40 years
C)30 years
D)25 years ​

Answer 1

Answer:

(a)35

Step-by-step explanation:

Answer 2

Answer:

A) 35 years

Step-by-step explanation:

$> \frac{7x + 10}{2x + 10} = \frac{9}{4} \\ > 28x + 40 = 18x + 90 \\ > 10x = 50 \\ > therefore \: x = 5$

5×7=35

.°.age is 35 years