Answer:
372 gallons
Step-by-step explanation:
The original amount of water in the pool is 411 gallons
The loss is 13 gallons
1 hour = -13 gallons
3 hours = (3 x -13) = -39 gallons
The question asks, how much water will the pool contain after 3 hours?
We already know that the pool will have lost 39 gallons so the answer will be gotten from subtracting 39 gallons from the original amount (411 gallons)
411 - 39 = 372
