Question

trent added water to a pool. it took 3 minutes to add 9 gallons of water.
How long would it take to add 18 gallons of water to the pool?

Answer 1

If it took 3 minutes to add 9 gallons of water, the rate at which water is being added to the pool is 9 gallons/3 minutes = <<9/3=3>>3 gallons/minute.
Therefore, it would take 18 gallons / 3 gallons/minute = <<18/3=6>>6 minutes to add 18 gallons of water to the pool. Answer: \boxed{6}.