Answer:
5 hours
Step-by-step explanation:
Data provided in the question
Per month tennis charges = $50
Court time per hour = $10
Current month bill = $100
By considering the above information we can find out the variable expense that is shown below:
= Current month bill - per month tennis charges
= $100 - $50
= $50
So, the number of court time hours usage is
= $50 ÷ $10
= 5 hours