Problem $6-15($Algo$)$ PLEASE ANSWER ALL FOUR QUESTIONS

An assembly line is to operate eight hours per day with a desired output of $250$ units per day. The following table contains information on this product$$s task times and precedence relationships:

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

A $50$

B $20$ A

C $25$ A

D $35$ A

E $60$ B$,$ C

F $60$ C$,$ D

G $50$ E$,$ F

H $90$ 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.

Task and idle time in seconds

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.