Answer with Step-by-step explanation:
Katrina drinks 0.5 gallons of water per day.
There are 16 gallons in a cup.
There are 1 gallons in 1/16 cup
1/2 gallons in 1/32 cup.
i.e. Katrina drinks 1/32 cups of water per day
Katrina drinks 7×1/32 cup of water in a week.
(since, 1 week=7 days)