snowprincess99447
05.11.2020 •
Mathematics
The ratio of girls to boys in a class is 3:2.If there are 50 students in the class, how many are boys and how many are girls?
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Ответ:
let x be ratio
then girl=3x
boy=2x
3x+2x=50
5x=50
x=10
:.girl =3*10=30
:.boy=2*10=20
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