Answer:
A pool can fill 22,000 gallons in 55 minute.
Step-by-step explanation:
Given : A pool holds 22,000 gallons and to fill the pool at a rate of 400 gallons per minute,
To find : how long will it take to fill the pool .
Solution : We have given that
A pool can fill 400 gallons = 1 minute.
A pool can fill 1 gallons = 
A pool can fill 22,000 gallons =
.
A pool can fill 22,000 gallons = 55 minute.
Therefore, A pool can fill 22,000 gallons in 55 minute.