Answer:
The answer to your problem is, JSRA [ Jet Ski Rental A ]
Step-by-step explanation:
Lets put it into a simple way:
JSRA [ Jet Ski Rental A ] = 25$ + 5$ an hour = 30$h
JSRB [ Jet Ski Rental B ] = 30$ + 4$ an hour = 34$h
We can see that JSRA is more cheaper than JSRB so the difference between them is 4$ even though being 4$ more we still want the cheaper one being JSRA.
Thus the answer to your problem is, JSRA [ Jet Ski Rental A ]
