Question

The cost to rent a tube from Tubes-R-Us is $2 plus $0.50 per hour. The cost to rent a tube a tube at Rockin' River is $1 plus $0.75 per hour. After how

many hours will the cost of renting a tube at Tubes-R-Us be the same as the cost of renting a tube from Rockin' River?

Answer 1

4 hours

Explanation:

System of Equations:

(Tubes). c = 2 + .50h

(Rockin). c = 1 + .75h

set them equal to each other and solve for ’h’

2 + .50h = 1 + .75h

1 = .25h

h = 4

Answer 2

4 hours

Explanation:

0.5 times 4 hours = 2 dollars. 2 dollars + 2 dollars = 4 dollars

0.75 times 4 = 3 dollars. 3 dollars plus 1 dollar = 4