- A13.75
- B32
- C12
- D24
Step-by-Step Solution
Combined rate = 1/20 + 1/44 = 11/220 + 5/220 = 16/220 of the tank per hour. Time = 220/16 = 13.75 hours.
Answer: A) 13.75
One inlet can fill a factory's water tank in 20 hours and a second inlet can fill it in 44 hours. With both inlets running, how long (in hours) does it take to fill the tank?
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