Anthony, Brian and Chris are hired for a job. If Anthony and Brian are working together they will finish the job in 36 minutes. If Anthony and Chris are working together they will finish the job in 45 minutes. If Brian and Chris are working together, they will finish the job in 1 hour. If the Chris is working alone, how long will it take him to finish the job? 72 minutes 90 minutes 108 minutes 180 minutes