Question

The present age of father and son is in the ratio 4;1 after 10 year the sum of their age will be 70 present age of the son is

Answer 1

Answer: 10

Step-by-step explanation:

let age of son be x

then age of father =4x

after ten years their age become

son=x+10

father =4x+10

x+10+4x+10=70

5x+20=70

5x=50

x=10

present age of son =10

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Answer 2

Answer:

10years old

Step-by-step explanation:

given ratio of father's and son's age is 4:1 i.e. 4x and x are the present age respectively of father and son..... now after 10 years father's age is 4x+10 and son's age is x+10

As per question the sum of their age after 10 years is 70

then 4x+10+x+10=70

5x+20=70

5x=70-20

5x=50

x=50/5=10

so the son's present age is x=10