There are 3 pizzas, cut into 10 peices each. The total cost of the pizzas was $25, and dorm A contributed $10 towards the pizza. How many peices of pizza should dorm A receive?

Answer 1

3*10=30

x/30=10/25
Cross multiply:
25x=300
Divide both sides by 25:
x=12

To check, plug in 12 for x

12/30=10/25
Simpligy:
2/5=2/5

Answer 2

*simplify