SOLUTION: A class has 12 boys and 21 girls. The class as a whole has a GPA (grade point average) of 2.96, and the boys have a GPA of 2.40. What is the GPA of the girls?
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Question 846420: A class has 12 boys and 21 girls. The class as a whole has a GPA (grade point average) of 2.96, and the boys have a GPA of 2.40. What is the GPA of the girls?
Answer by Math_prodigy(24) (Show Source): You can put this solution on YOUR website!
Let "g" be "GPA of the girls"
set up equation
(12*2.40+21*g)/33=2.96
solve it
(12*2.40+21*g)=97.68
21*g=97.68-12*2.40
21*g=68.88
g=3.28
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