Donna is filling a tank with water at a rate of
2
gallons per minute. The tank already had
140
gallons of water in it. Suppose the tank holds a total of
200
gallons of water. How much longer will it take her to fill the tank?
+36915 Since the tank holds 200 gallons ad it has 140 gallons in it, there are only 200-140 = 60 gallons left to fill.
60 galllons/ 2gal/min = 30 minutes
