harrows manufacturing & machining inc. has been in operation for one year. The only product they produce is a specific bicycle chain. They want to make sure they are effectively utilizing the machinery they use to manufacture this product. Below is the information concerning the machine that produces the bicycle chain:

Actual run time this week 2,500 minutes

machine time available per week 3,125 minutes

actual run rate this week 2.4 units per minute

ideal run rate 3.2 units per minute

defect-free output this week 5,100 units

total output this week (including defects) 6,000 units

harrows efficiency rate was:

0.85

0.75

0.42

0.80