Christopher's Cranks uses a machine that can produce 100 cranks per hour.The firm operates 12 hours per day,five days per week.Due to regularly scheduled preventive maintenance,the firm expects the machine to be running during approximately 95% of the available time.Based on experience with other products,the firm expects to achieve an efficiency level for the cranks of 85%.What is the expected weekly output of cranks for this company?
A)5100
B)5700
C)4845
D)969
E)6783

Question

Quizplus · Accepted Answer

Number of hours per week the machine can run = 12 hours/day x 5 days/week = 60 hours/week
Expected running time of the machine = 95% of 60 hours = 57 hours/week
Efficiency level of the machine for cranks = 85%
Expected weekly output = 57 hours/week x 100 cranks/hour x 85% = 4,845 cranks/week. 
Therefore, the best choice is C.

Christopher's Cranks Uses a Machine That Can Produce 100 Cranks