SOLUTION: the ratio of boys to girls in the class is 1:3. If there are 28 students in the class, how many girls are there?

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Question 944659: the ratio of boys to girls in the class is 1:3. If there are 28 students in the class, how many girls are there?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
B%2FG=1%2F3
3B=G
and
B%2BG=28
Substituting,
B%2B3B=28
4B=28
B=7
and
G=3%287%29
G=21