At the skating rink. David paid 18.5 and skated for 3 hours while Jennifer skated for 2 hours and paid $ 14.0 Both of the prices include the price of renting skates

Question

What is the cost per hour
What is the initial rental cost

Answer 1

Cost per hour for David: $18.5 / 3 hours = $6.17 per hour
Cost per hour for Jennifer: $14.0 / 2 hours = $7 per hour

Initial rental cost: The difference between the total cost and the cost of skating alone.
For David: $18.5 - ($6.17 * 3) = $18.5 - $18.51 = $0.01
For Jennifer: $14.0 - ($7 * 2) = $14 - $14 = $0

So, the initial rental cost for both David and Jennifer is $0.