- A3 h
- B5 h
- C1.25 h
- D10 h
Step-by-Step Solution
Three outlets cancel three inlets, leaving 2 inlets: per hour → 5 h. (1.25 h treats all 8 as inlets.)
Answer: B) 5 h
A tank has 5 inlets and 3 outlets, all of the same size, so each inlet would fill the tank in 10 hours and each outlet would empty it in 10 hours. With all 8 open, how long does the empty tank take to fill?
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