- A1 h 12 min
- B2 h
- C4 h 30 min
- D3 h
Step-by-Step Solution
Net outflow L/min; min h. (1 h 12 min ignores the inlet.)
Answer: D) 3 h
A full 7,200-litre tank has an inlet bringing 60 litres per minute and two outlets each draining 50 litres per minute. If all three are opened, how long until the tank is empty?
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