Ahobby shop sells 4 times as many model of airplanes than model helicopters the total number of model is 35

let's call airplanes "a" and helicopters "h".

The total number of models is 35. This means that a+h=35

4 times as many model airplanes as model helicopters. This means a=4h.

we can substitute this into the previous equation:

4h+h=35

5h=35

dividing by 5:

h=7

so he has 7 helicopters and 4*7=28 airplanes

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .

42.4

step-by-step explanation:

convert to decimal