An assembly line is to operate eight hours per day with a desired output of $288$ units per day. The following table contains information on this product$$s task times and precedence relationships:

TASK TASK TIME $($SECONDS$)$ IMMEDIATE PREDECESSOR

A $60$

B $50$ A

C $40$ A

D $60$ A

E $50$ B$,$ C

F $30$ C$,$ D

G $30$ E$,$ F

H $60$ G

What is the required workstation cycle time to meet the desired output rate?

Note: Round your answer to the nearest whole number.

Balance this line using the longest task time.

Note: Leave no cells blank $-$ be certain to enter $"0"$ wherever required.

What is the efficiency of your line balance, assuming it is running at the cycle time determined in part b$?$

Note: Round your answer to $1$ decimal place.