You can put this solution on YOUR website! If there are 12 girls in Mrs hardys class and 40% are boys how many kids are in the class
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If 40% are boys, 60% must be girls.
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Equation:
Let "x" be the number in the class.
0.60x = 12
x = 12/0.6 = 120/6 = 20 (# in the class)
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Cheers,
Stan H.