SOLUTION: the ratio of boys to girls in a class is 4 to 3, and there is a total of 28 students. how many girls are in the class?
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Question 672871: the ratio of boys to girls in a class is 4 to 3, and there is a total of 28 students. how many girls are in the class?
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
let be girls and boys
the ratio of boys to girls in a class is ,
......solve for
......eq. 1
and there is a total of , which is ...substitute from eq. 1
....solve for
......girls
......eq. 1....plug in
so, there are boys and girls in the class
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