JEE Advanced Model Paper 1 with solutions for online practice

A binary star consists of two starts A (mass 2.2 Ms) and B (mass 11 Ms) , where Ms is the mass of the sun. They are separated by distance d and are rotating about their centre of mass, which is stationary. Find the ratio of the total angularmomentum of the binary star to the angular momentum of star B about the centre of mass.