1. The problem statement, all variables and given/known data Two stars of mass m_{1} and m_{2} are in orbit around their center of mass. If 2m_{1}=5m_{2}, and thier orbital period is 120Ms, calculate the mass of the larger star, given that the distance between their centers is 1400Gm. 2. Relevant equations F=GmM/r^{2} 3. The attempt at a solution I don't even know what to put as mass of the centripod, i kneed serious help