Question 603082
There are 63 students in a middle school chorus. There are 11 more boys than girls. How many boys x and girls y are in the chorus? 
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b + g = 65
b = g + 11
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Substitute for "b" and solve for "g":
g+11+g = 65
2g = 54
g = 27 (# of girls)
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Solve for "b":
b + 27 = 65
b = 38 (# of boys)
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Cheers,
Stan H.
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