Answer:
Mr. Kirkson uses 9.60 gallons of water per square foot to water his garden each week.
Explanation:
This problem can be solved by a simple rule of three.
We have that 1/3 = 0.33 square foot of his garden uses uses 3 1/6 = 19/6 = 3.167 gallons of water. How many are used per square foot? So:
1 foot - x gallons
0.33 foot - 3.167 gallons



Mr. Kirkson uses 9.60 gallons of water per square foot to water his garden each week.