Interest earned: $40, Principal: $400, Time: 2 years. Find the rate.

840

Step-by-step explanation:

40+400×2=840

5 percent per year

400/10=40

40/2=20

400/20=5

5 percent per year

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 .