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?
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
*simplify
To find out how many pieces of pizza dorm A should receive, we need to first determine the total number of pieces of pizza and then calculate the portion that dorm A contributed.
Given that there are 3 pizzas, each cut into 10 pieces, the total number of pieces of pizza is 3 * 10 = 30.
Next, we know that the total cost of the pizzas was $25, and dorm A contributed $10. To calculate the portion that dorm A contributed, we can use the proportion of the contribution to the total cost:
Portion contributed by dorm A = (Dorm A's contribution / Total cost of pizzas) * Total number of pieces of pizza
Plugging in the values, we have:
Portion contributed by dorm A = ($10 / $25) * 30 = (2/5) * 30 = 12 pieces
Therefore, dorm A should receive 12 pieces of pizza.