Question

The ratio of the ages of the father and the son at present is 3:1.4 years ago, the ratio was 4:1 What are the present ages of the son and the father ?​

Answer 1

Answer:

Given the ratio of present age of father and son is 4:1.

Let their present age is 4x and x.

Then 4 years ago their age was 4x−4 and x−4.

Then according to the problem,

x−4

4x−4

=

2

11

or, 8x−8=11x−44

or, 3x=36

or, x=12.

So present age of father and son is 48 years and 12 years respectively.

Step-by-step explanation:

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Answer 2

Answer:

$\huge \rm \ \underline \red{solution}$

༊ let the present age of father be 3x

༊ let the present age of son be x

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༊ let the fathers age after 4 years be 3x - 4

༊ let the sons age after 4 years be x - 4

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A/Q ⏎

$\green{ \frac{3x - 4}{x - 4} = \frac{4}{1} }$

♛ by cross multiplication we get :-

3x - 4 = 4(x-4)

↬ 3x - 4 = 4x - 16

↬ x = 12

$\bf \: present \: age \: of \: father$

= 3x = 3 × 12 = 36 years

$\bf \: present \: age \: of \: son$

= 12 years