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In a class of 18 there are 2 girls for every 1 boy. how many girls are there?

In a class of 18 there are 2 girls for every 1 boy. how many girls are there?
46.6k views
5 votes
In a class of 18 there are 2 girls for every 1 boy. how many girls are there?

User Bergrebell
by
8.7k points

2 Answers

4 votes
2 girls = 1 boy
12 girls = 6 boys
12 + 6 = 18
girls = 12
User Michiel Van Dijk
by
8.2k points
3 votes
x-girls y-boys

if x+y=18 and 2x=y then


x+2x=18
3x=18
x=6
User Erdem Ergin
by
8.6k points
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