Given:
No. of cranks per hour = 85 cranks, since the firm expects to achieve an efficiency level for the cranks
No. of
hours in the week = [(12 x 5) x 95%] = 57 hours, since
only 95% of the machine running time because of preventive maintenance
Therefore, the expected weekly output of cranks for
this company is = 85 cranks x 57 hours
=
4845 cranks (c)