Latoya is filling a tank with water at a rate of
gallons per minute. The tank already had
gallons of water in it. Suppose the tank holds a total of
gallons of water. How much longer will it take her to fill the tank?
350 - 170 = 180 gallons to be filled by Latoya.
180 / 4 = 45 - minutes that will take Latoya to fill the tank.