Answer:
270 oranges
Explanation:
If Ariana takes 10 minutes to peel 5 oranges, then:

First, convert hours to minutes:
1 hour = 60 minutes
9 hours = 9 × 60 minutes = 540 minutes
Second, if x is the numbers of oranges, so the # of oranges Ariana could peel in 9 hours are:


x = 54 × 5
x = 270 oranges
Hope it helps. Thanks!