Question

11.
Mother is 20 year older than her son. The ratio of their ages after 4 years will be 7. Frame the
equation with above information. Consider the present age of son be x years.

Answer 1

Answer:

7x - y - 24 = 0

Step-by-step explanation:

Let mother age be y

Given

y = x + 20

After 4 years, their ages will be x + 7 and y + 7

the ratio will be

$\frac{y + 4}{x + 4} = 7$

$y + 4 = 7(x + 4)$

$y + 4 = 7x + 28$

After rearranging,

$7x - y - 24 = 0$

by substituting y = x + 20, we can find the son's age.

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