A gas in a container is at a constant temperature, T. The molecules have two vibrational states, the higher of which has energy 0.88 kB T. There are 3000 molecules in the higher energy state and approximately 5500 in the lower state. What is the energy of the molecules in the lower state?

The correct answer to this question is: 0.27 kB T. Please provide a detailed explanation of how to arrive at this answer.