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sleet_krkn [62]
3 years ago
5

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

Mathematics
2 answers:
WARRIOR [948]3 years ago
7 0
2 girls = 1 boy
12 girls = 6 boys 
12 + 6 = 18 
girls = 12
dsp733 years ago
3 0
X-girls y-boys

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


x+2x=18
3x=18
x=6
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