There are 2 gallons of water in a tub. Lubanzi turns on the faucet, and water pours into the tub at a rate of 5 gallons per minute. Lubanzi lets the water run until the tub is full, conaining 42 gallons.

Answer 1

It takes 8 minutes for the tub to be filled with water (42 gallons – 2 gallons = 40 gallons left to fill, 40 gallons / 5 gallons per minute = 8 minutes).