Hose rate = 60 cubic feet of water per minute
width of the pool = 80 feet
Length of pool = 150 feet
depth of pool = 10 feet
volume of the pool = 80*150*10 = 120,000 cubic feet
present pool capacity = 80% of 120,000 = 96000 cubic
if hose can drain 60 cubic feet in 1 minute, It will drain 96,000 cubic feet in
$$\frac{96,000\cdot1}{60}=1600\minutes$$
60 minutes = 1 hour
$$1600\ \min utes\ =\frac{1600\cdot1}{60}$$
$$26\frac{2}{3}$$ $$Answer\ is\ Option\ B$$