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Qin a class, the ratio of boys to girls is 3/4

in a class, the ratio of boys to girls is 3/4. if there are 12 boys in the class, how many girls are there

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#1potatoAnswered at 2013-02-03 10:05:39
Set up a proportion. Let x = the number of girls.

3 / 4 = 12 / x

Cross multiply:

3x = 48
x = 16
#2Mè ‖ love you Answered at 2013-02-09 10:51:26
for every 3 boys there is 4 girls
divide 12 by 3 and the answer is 4
multiply 4 by 4
16 This will be your answer
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