Six jobs are to be processed through a two step operation The fest operation involves sanding, and the second involves painting Processing times are as follows: Using Johnson's rule for 2-machine scheduling, the sequence is Scheduled Order Job Operation 2 (hours) Job A 2 4 Operation 1 (hours) 10 3 6 12 5 14 3 mo 2 7 1 13 4 5 6 For the schedule developed using Johnson's rule, the total length of time taken to complete the sxjobs (including the 2nd operation) -hours (enter your response as a whole number)