$60$ units per shift.

a$.$ Balance the assembly line using the longest$-$processing$-$time rule. State the tasks associated with each workstation, total time, and idle time. Break ties by choosing the lowest task number. If your answer is zero, enter $"0".$ Round your answers to the nearest whole number.

Workstation Assigned Tasks Total Time, minutes Idle Time, minutes

A

$-$Select$-vv$

B

C

$-$Select$-$

D

E

b$.$ What is the assemblv$-$line efficiencv? Round vour answer to one decimal olace.