SOLUTION: John is three times as old as his son jack, and the sum of their ages is 48, how old is John?

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Question 973364: John is three times as old as his son jack, and the sum of their ages is 48, how old is John?
Answer by amarjeeth123(570) About Me  (Show Source):
You can put this solution on YOUR website!
Let Jack's age be x.
Then John's age is 3x.
sum of their ages is 48
x+3x=48
4x=48
x=12
John's age=3(12)=36
John's age is 36.