SOLUTION: Bob gave 2/3 of his chips and had 21chips left. How many chips did he give away? I came up with 14 by doing 2/3*21

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Question 958250: Bob gave 2/3 of his chips and had 21chips left. How many chips did he give away?
I came up with 14 by doing 2/3*21
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
No.
He gave away 2/3 so he had 1/3 left.
So,
%281%2F3%29X=21
where X is the original amount he started with.
You can multiply both sides by 2.
%282%2F3%29X=42
So he had gave away 42 chips.