Question

The ratio of the father’s age to his son’s age is
7 : 3. The product of their ages is 756. The ratio
of their ages after 6 years will be:
(a) 6 : 7 (b) 2 : 1
(c) 10 : 9 (d) 3 : 2

Answer 1

c 10:9 will be the answer

Answer 2

Answer:

(b)

Step-by-step explanation:

Let the present ages of the father and son be 7x and 3x years respectively.

Then, 7x * 3x = 756 <=> 21x2 = 756

<=> x2 = 36 <=> x = 6.

∴

Required ratio = (7x + 6) : (3x + 6) = 48 : 24 = 2 : 1.