Explanation:
To find out how many ounces of water Mari will drink during the marathon, we can first calculate the rate at which she drinks water per mile during her 7-mile run.
She drank 33 1/4 ounces of water during 7 miles, so her rate is:
Rate per mile = 33 1/4 ounces / 7 miles = 33 1/4 ounces / mile.
Now, to find out how much she will drink during the 26 1/5 miles of the marathon, we multiply her rate per mile by the marathon distance:
Water consumed = (33 1/4 ounces/mile) * 26 1/5 miles.