6.9. Parent A requires 1 each of component B and C. Both B and C are processed on work center 20, which has an available capacity of 60 hours. The setup time for component B is 1.5 hours and the run time is 30 minutes per piece. For component C, setup time is 2.5 hours and the run time is 20 minutes per piece. Calculate the number of Bs and Cs that can be produced.