If a tank holds 2000 gallons of water, which drains from the bottom of the tank in 40 minutes, then Torricelli's Law gives the volume [math] of water remaining in the tank after [math] minutes as [math].
Find the rate at which the water is draining out of the tank after:
(a) 5 min
(b) 10 min
(c) 20 min
(d) 40 min

(a) gal/min
(b) gal/min
(c) gal/min
(d) gal/min