SOLUTION: If Ben was a year older, he would be three times as old as his brother tom. Tom is six. How old is BEN?

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Question 684151: If Ben was a year older, he would be three times as old as his brother tom. Tom is six. How old is BEN?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +b+ = Ben's age now
If Tom is 6, in 1 year he will be 7
In 1 year, Ben will be +b+%2B+1+
---------------------------
given:
+b+%2B+1+=+3%2A7+
+b+=+21+-+1+
+b+=+20+
Ben is 20