- A108 litres
- B144 litres
- C72 litres
- D36 litres
Step-by-Step Solution
Inlets: of the tank a minute; net . The drain takes a minute = 4 L, so capacity 144 L.
Answer: B) 144 litres
Two pipes fill a tank in 12 and 18 minutes. A drain removing 4 litres a minute is also open, and the tank fills in 9 minutes. What is its capacity?
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