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Hi,
A soccer team has 3 more boys and three-fourths as many girls as last year.
Let x and y represent the number of girls and boys last year.
This year would be (x+3) and 3/4y
The number of players on the team is the
as last year.
x+y = (x+3) + 3/4y
1/4y = 3
y = 12, number of girls on the team last year.