SOLUTION: Please help me to solve the problem. In a school 720 are boys and 40% are girls. Find the number of girls?

Question 1062620: Please help me to solve the problem. In a school 720 are boys and 40% are girls. Find the number of girls?

Found 3 solutions by rfer, josgarithmetic, MathTherapy:
Answer by rfer(16322)   (Show Source): You can put this solution on YOUR website!

Answer by josgarithmetic(39629)   (Show Source): You can put this solution on YOUR website!
40%+60%=100%

60% is for the proportion of boys.

p is school population:

---------students in the school.

40% of p are girls.

Answer by MathTherapy(10556)   (Show Source): You can put this solution on YOUR website!
Please help me to solve the problem. In a school 720 are boys and 40% are girls. Find the number of girls?

This is a SIMPLE, SIMPLE proportion problem.
As 40% (.4) are girls, 60% (.6) are boys, which also happens to be 720.
With G being the number of girls, we have:
.6G = .4(720) ------- Cross-multiplying
G, or number of girls =
It's that SIMPLE....nothing COMPLEX and/or CONFUSING!
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