SOLUTION: Afather was 30 yrs old when his son was born. After how many years will the age of the father be four times the age of the son?
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Question 997826: Afather was 30 yrs old when his son was born. After how many years will the age of the father be four times the age of the son?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Call x the number of years we are looking for...
At any time in the future, the boy's age will be x and the father's age will be 30 + x.
We want to know when
30 + x = 4x
30 = 3x
x = 10 years
The son will be ten and the father will be forty.
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