Question content area left

Part $1$

Using$$ Johnson's rule for$2-$machine scheduling, the sequence$$ is:

Part $2$Part $3$Part $4$Part $5$Part $6$

Scheduled Order

Job

$1$

A

$2$

F

$3$

E

$4$

B

$5$

D

$6$

C

Part $7$

For the schedule developed using$$ Johnson's rule, the total length of time taken to complete the six jobs$($including the $2$nd$$ operation$)=$ enter your response here hours $($enter your response as a whole$$ number$).$

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Question content area right

Part $1$

Six jobs are to be processed through a$$ two$-$step operation. The first operation involves$$ sanding, and the second involves painting. Processing times are as$$ follows:

$$

Job

Operation $1($hours$)$

Operation $2($hours$)$

Upper A

$1$

$3$

Upper B

$10$

$12$

Upper C

$8$

$7$

Upper D

$11$

$9$

Upper E

$4$

$6$

Upper F

$2$

$13$