Mathematics
27ev00
3

Item 31 forty students are in the science club. of those, 45% are girls. this percent increases to 56% after new girls join the club. how many new girls join?

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googlass123

40 represents a total, but then 45% represents a part. First of all, let's find the amount of girls in the club. 45% of 40  = 18 girls If it was increased to 56%: 56% of 40 = estimated 23, since we can't have two fifths of a person.  23 - 18 = 5 new girls joined.

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