Question

what is the age of father and his son if the sum of the age of a father and his son in years is 85 and thrice the difference of their ages in years is 75.

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Answer 1

Answer:

first do as yourself I just given you a hint:- let son's age=x

and father's age=3x

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

let age of son = x

Father's age = y

x+y = 85 (given)

3(y-x) = 75 ( given)

y-x = 25

So by elimination method,

y + x = 85

y - x = - 25

--------—---------------

2y = 60

Therefore father's age = 30

son's age = 30-25 = 5