Question

Karrisa is going water skiing. She has a choice on either renting or purchasing the skis. She must also rent a safety jacket. She can purchase skis for $125 a pair. The rental fee for skis and a safety jacket is $30 per hour. The rental fee for only the safety jacket is $5 per hour. How many hours must she ski for the price of renting skis and purchasing the skis to be the same?

Answer 1

5 hours

Explanation:

The rental option for h hours costs ...

r = 30h

The purchase option for h hours costs ...

p = 125 +5h

These costs are the same when ...

r = p

30h = 125 +5h

25h = 125 . . . . . subtract 5h

h = 5 . . . . . . . . . divide by 25

Karrisa must ski for 5 hours for the prices to be the same.