You can cross multiply to get 4 * 21 = 7x
84 = 7x; divide both sides by 7
12 = x so the number 12 will go in the blank (12 girls)
Step-by-step explanation:
the formula is too long so the link is below:
https://www.geteasysoloution.com/1/3x+12=x-4
She can buy a maximum of 80 cups.
Answer:
I made the problem in a photo so you could do it for the next
So this is super easy :) Simply turn 15% into a decimal <span>0.15
5.85 is how much money she doesn't have to pay.
So she has to pay 33. 15</span>
