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USPshnik [31]
3 years ago
10

you have 12 cards. one out of every 4 cards is faceup. the rest are facedown. how many cards are faceup

Mathematics
1 answer:
umka2103 [35]3 years ago
7 0
3 cards 

1/4 = x/12      1/4 = 3/12 
4 * 3 = 12
1 * 3 = 3
x = 3 
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