SOLUTION: PLease help me solve this word problem: Tom's father is 3 times old as Tom. 4 years ago, he was 4 times older. How old is Tom? -----Thank you =)

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Question 234244: PLease help me solve this word problem:
Tom's father is 3 times old as Tom. 4 years ago, he was 4 times older. How old is Tom?
-----Thank you =)
Answer by chibisan(131) About Me  (Show Source):
You can put this solution on YOUR website!
let tom's present age = x , father be 3x
4yrs ago,
3x-4=4(x-4)
3x-4=4x-16
12=x (tom's age)