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30 students in the first period algebra I class, 18 are girls. If this class is representative of all classes, how many students in a school of 500 are girl?
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30 : 18 x : 500 cross multiply.
50,000
haha
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wow, did you even try what saifoo khan said?
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300 is your answer divide 18 by thirty, multiply by 500 to get three hundred.
THANKS
rofl, it 300
30 : 18 500 : x cross multiply it 9000=30x x=300
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