SOLUTION: In a class of 45, there were 4 times as many as girls. When some girls left for a meeting, there were 6 times as many boys as girls. how many girls went for the meeting?

Question 1143432: In a class of 45, there were 4 times as many as girls. When some girls left for a meeting, there were 6 times as many boys as girls. how many girls went for the meeting?
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
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In a class of 45, there were 4 times as many as girls.
When some girls left for a meeting, there were 6 times as many boys as girls. how many girls went for the meeting?
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Pay attention om how I edited your post to make sense.

If x is the initial number of girls, then the number of boys is  4x,  and the condition says


    x + 4x = 45,


giving  5x = 45,  x = 45/5 = 9 for the initial number of girls in the class,

and  45-9 = 36 for the number of boys.


Next we want to find y = how many girls went . . . 


For it, you have this equation


    6*(9-y) = 36,


Solve it step by step


    9-y = 36/6 = 6

    9 - 6 = y

    y = 3.      ANSWER

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