Question

the sum of present ages of father and son is 68 years eight years ago, the ratio of their age was 12:1 ,what will be the ratio of their ages 4years hence​

Answer 1

The required ratio is 15:4.

Step-by-step explanation:

It is given that eight years ago the ratio of father and son age was 12:1.

Let eight years ago the age father and son are 12x and x respectively.

Present age of father = 12x+8

Present age of son = x+8

The sum of present ages of father and son is 68 years.

$12x+8+x+8=68$

$13x+16=68$

$13x=68-16$

$13x=52$

Divide both sides by 13.

$x=4$

Present age of father = 12(4)+8 = 56

Present age of son = 4+8 = 12

The ratio of their ages 4 years hence​ is

$\dfrac{56+4}{12+4}=\dfrac{60}{16}=\dfrac{15}{4}=15:4$

Therefore, the required ratio is 15:4.

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The sum of the present ages of father and son is 68 years. eight years ago, the ratio of their age was 12:1. what will be the ratio of their ages 4 years hence​.

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