SOLUTION: In a class, 1/8 of the boys and 1/4 of the girls play the piano, and 3 times as many girls as boys play the piano. If there are 100 boys and girls in the class, how many boys play

Question 387458: In a class, 1/8 of the boys and 1/4 of the girls play the piano, and 3 times as many girls as boys play the piano. If there are 100 boys and girls in the class, how many boys play the piano?
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
b+g =100,
b/8 = # boys playing the piano
g/4 = # girls playing the piano
, or . Then
, or 2.5b = 100, or b = 40, # boys in the class. Therefore
40/8 = 5 boys play the piano. (Also, 60/4 = 15 girls play the piano.)

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