# A.2.8.3 Filling and Emptying Tanks

Tank A initially contained 124 liters of water. It is then filled with more water, at a constant rate of 9 liters per minute. How many liters of water, W, are in Tank A after the following amounts of time have passed? a.  4 minutes b.  80 seconds c.  m minutes

How many minutes have passed, m, when Tank A contains the following amounts of water? a. 151 liters b. 191.5 liters c. 270.25 liters d.  W liters

What "moves" would you make to isolate m in the following equation: 124 + 9m = W

Tank B, which initially contained 80 liters of water, is being drained at a rate of 2.5 liters per minute. How many liters of water, W, remain in the tank after the following amounts of time? a. 30 seconds b. 7 minutes c. t minutes

For how many minutes, t, has the water been draining when Tank B contains the following amounts of water? a. 75 liters b. 32.5 liters c. 18 liters d. W liters

What "moves" would you make to isolate t in the following equation: W = 80 - 2.5t