SOLUTION: Three sevenths of the pizza was eaten.what percent of the pizza was not eaten?

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Question 686599: Three sevenths of the pizza was eaten.what percent of the pizza was not eaten?
Found 2 solutions by rfer, josmiceli:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
4/7 not eaten
4/7=0.57=57% not eaten

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
the whole pizza = 1
1 = 7/7
( whole pizza ) - ( portion that is eaten ) = ( portion not eaten )
7/7 - 3/7 = 4/7
4/7 of the pizza was not eaten