Ryanair Initial Practice Exam

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What is the maximum duration for using a 120L oxygen bottle on low flow at 2 litres per minute?

  1. 30 minutes

  2. 60 minutes

  3. 77 minutes

  4. 154 minutes

The correct answer is: 60 minutes

To determine the maximum duration for using a 120L oxygen bottle on low flow at a rate of 2 litres per minute, you can use a straightforward calculation based on the bottle size and the flow rate. First, understand that the total volume of oxygen in the bottle is 120 litres. If the flow rate is set at 2 litres per minute, you can calculate the total time of use by dividing the total volume of the bottle by the flow rate: 120 litres ÷ 2 litres/minute = 60 minutes. This calculation shows that the oxygen can be continuously delivered at the specified flow rate for a maximum of 60 minutes. Thus, the correct answer is based on simple division of the total gas volume by the continuous consumption rate.

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