An inflating pump transfers 15.0 litres15.0\text{ litres}15.0 litres of air from the atmosphere into a deflated camping air mattress, inflating it.
The pressure of the air inside the fully inflated mattress is 250 000 Pa250\,000\text{ Pa}250000 Pa.
Atmospheric pressure is 100 000 Pa100\,000\text{ Pa}100000 Pa.
Calculate the volume of the inflated air mattress in litres.
Assume the temperature of the air inside the mattress is the same as the temperature of the air outside.
Use the equation:
pressure×volume=constant \text{pressure} \times \text{volume} = \text{constant} pressure×volume=constant