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There were 42 students in the classroom. There were 10% more girls than boys. A few girls went to the restroom. As a result, the number of boys became 25% more than the number of girls in the classroom. How many girls went to the restroom?

 May 28, 2021
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42 students      10% more girls

            B  + 1.1B = 42

                B = 20      then G = 22

 

x girls go the bathroom and

 

B      =     1.25 (22-x)

20    =      27.5 - 1.25x

x = 6   girls went to the can

 May 28, 2021

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