Answer:
64% of the children were girls
Explanation:
This is true because out of 500 children total 320 are girls, so what we do is first multiply all values by 2 so that we can get our result easier. 320x2=640, 180x2=360, and 500x2=1000, this makes things simpler because 50 is half of 100 so now we have something that is easier to calculate with because now if we remove 1 zero from each number we will get 36,64, and 100 so out of 100%, 64% are girls
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