At birthday Party girls ate 7 3/4 pizzas and the boys ate 2 1/2 pizzas. How many pizzas were eaten at my party?

10 1/4

Step-by-step explanation:

2 1/2 = 5/2

5/2 (2/2)= 10/4

7 3/4 = 31/4

10/4+31/4=41/4

41/4 = 10 1/4

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.