Question

A 25 liter Cylinder contain a mixture of oxygen and Nitrogen. The
volume of oxygen in 25% of total volume. A few liters of the
mixture is replaced by an equal amount of nitrogen and the
process repeated once again so that the oxygen content
become 9% of the total Volume. How many liters of mixture is replaced each time ?​

Answer 1

Step-by-step explanation:

A 25 liter Cylinder contain a mixture of oxygen and Nitrogen. The

volume of oxygen in 25% of total volume. A few liters of the

mixture is replaced by an equal amount of nitrogen and the

process repeated once again so that the oxygen content

become 9% of the total Volume. How many liters of mixture is replaced each time ?