Answer:
329 liters of water
Explanation:
We know
Six houses on the street use an average of 47 liters of water daily.
 In a week, the house will use how many liters?
There are 7 days a week, and we know they use 47 liters of water every day. 
We take
47 x 7 = 329 liters of water
So, the house will use 329 liters of water.