Solve the below problem:
Q: A tank has two rooms separated by a membrane. Room A has 1 kg air and volume 0.5 m3, room B has 0.75 m3 air with density 0.8 kg/m3. The membrane is broken and the air comes to a uniform state. Find the final density of the air. You should solve the given problem step by step.You should include all the units which are needed to complete the problem.