Question

Forty students are in fun club. Of those, 45% are girls. This percent increases to 56% after new girls join the club. How many new girls join? ~SwaggyAmerikanXO

Answer 1

45% of 40 is 0.45×40=18 girls

if x girls join then 56% of 40+x is 0.56(40+x)=18+x

22.4+0.56x=18+x

put together like terms

4.4=0.44x

x=10 girls joined

Answer:

Explanation:

Answer 2

45% of 40 is 0.45×40=18 girls
if x girls join then 56% of 40+x is 0.56(40+x)=18+x
22.4+0.56x=18+x
put together like terms
4.4=0.44x
x=10 girls joined