Chapter 11, Problem 11.32E

Reduced mass is not reserved only for atomic systems. A solar system or a planet/satellite system, for example, can have its behavior described by first determining its reduced mass. If the mass of Earth is $2.435\times {10}^{24}\text{kg}$ and that of the moon is $2.995\times {10}^{22}\text{kg}$, what is the reduced mass of the Earth-moon system? (This is not to imply any support of a planetary model for atoms!)