If the ratio of boys to girls in a class in B , the ratio of girls to boys is G , then B + G is :
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the ratio of class BG
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Ratio can be described as the comparison of two numbers
Explanation:
Let the number of boys be x and the number of girls =y
Ratio is boys/ girls
B = x/y
G=y/x
then B + G is : [x/y+y/x}
= x²+y²/xy
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