Forty students are In Science club. Of those 45% are girls. This percent increase 56% after new girls join the club. How many ne

Question

Virty [35]

3 years ago

6

Forty students are In Science club. Of those 45% are girls. This percent increase 56% after new girls join the club. How many ne

w girls joined?

Mathematics

1 answer:

stepan [7] · Answer 1 · 2022-01-13T14:31:44+03:00

stepan [7]3 years ago

8 0

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
<span>x=10 girls joined</span>