After a certain number of moves in a chess game, the ratio of black pieces to white pieces is 4 to 3. If there are 12 black piec
es on the board, which proportion can be used to find the number of white pieces?
2 answers:
What times 4 equals 12? 3! So if 3x4=12 then do 3x3 to find the white pieces;)
Black to white
4 : 3
12 : ?
should be 9
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