A 160-W silicon power transistor operated with a heat sink ( SA = 1.5C/W) has JC

A 160-W silicon power transistor operated with a heat sink (θ_SA= 1.5C/W) has θ _JC = 0.5C>W and mounting insulation of θ_CS = 0.8C/W. What maximum power can be handled by the transistor at an ambient temperature of 80°C? (The junction temperature should not exceed 200°C.)