In a class there are 30 boys and 10 girls. what percent are girls?​

I believe the answer would be 10%

Step-by-step explanation:

If you take 10% of 40 you get 4% however 40 is your total (100%) so therefore you would take the 4% multiply it by 2 and then you end up with 8% then you take 4% and divide it by 2 then add it on to your 8% then you end up with 10%

Hope this helps!

-Nate

(If this is correct please mark Brainliest)

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

5x+10 is the correct one

hope this