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Inlet A and outlet C are both opened on the empty tank shown. By how many litres does the water in the tank increase every minute?

Class 8Leaks and Changing PipesDirect and Inverse Proportions
  • A2 litres per minute
  • B22 litres per minute
  • C12 litres per minute
  • D120 litres per minute

Step-by-Step Solution

A brings L/min and C removes L/min. Net gain litres per minute (that is 120 L per hour).
Answer: A) 2 litres per minute

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