please answer 4,5 and 6 correctly. please show work, thank you (answer the questions directly in the pictures given)

McCauley's Heating and Air in Phoenix, Arizona, sells Mystifiers to keep homes and businesses from getting too dry in the desert air. The precedence diagram and task times in minutes) for assembling a Mystifier are shown here. Set up an assembly line to produce 125 mystifiers in a 40 hour week 19 D 10 1. What is the desired cycle time of the line? 19.2 minutes. (Round your answer to decimal place, the tolerance is +/-0.5) 4. What is the actual cycle time of the line chosen above? 19 minutes. (Round your answer to 0 decimal places.) 5. What is the actual output in a 40-hr week? 19.2 , (Round your answer to 0 decimal place, the tolerance is +/-0.5.) 6. What is the efficiency of the line? 80 %, (Round your answer to 1 decimal place, the tolerance is +/-0.5.)