SOLUTION: 7 of the 20 children in a group were boys.what percentage of them are boys?

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Question 949991: 7 of the 20 children in a group were boys.what percentage of them are boys?
Answer by MathLover1(20849) About Me  (Show Source):
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if 7 of the 20 children in a group were boys, then
x%=x%2F100 of the 20 children were 7 boys
so, percentage of boys is:
%28x%2F100%2920=7...solve for x
%28x%2Fcross%28100%295%29cross%2820%291=7
x%2F5=7
x=7%2A5
x=35
answer: 35% of boys