Answer: 3 gallons of strawberry will collected by Jen in 2 hours.
Explanation:
hour= 30 minutes (1 hour = 60 minutes)
Then in 2 hours = 120 minutes
Gallons of strawberry collected by Jen in 30 minute =
gallons
Gallons of strawberry collected by Jen in 1 minute=

Gallons of strawberry collected by Jen in 120 minutes =

3 gallons of strawberry will collected by Jen in 2 hours.