1) Consider consecutive activities A-B-C in a manufacturing process, where activity A has a capacity of 20 units per hour, activity B has a capacity of 25 units per hour, and activity C has a capacity of 30 units per hour. What is the utilization of activity B?

2) Students arrive at the rec center during peak hours at a rate of 40 students every 20 minutes. Each student stays an average of 1.2 hours. On average, how many students are in the rec center at any one time?

3) Which of the following statements about lean systems is TRUE?

a. While lean systems work very well for manufacturing systems, they cannot be applied to service systems.

b. Lean manufacturers organize production in large lots (batches) to minimize the number of setups.

c. In lean systems, if a defective product is found, defective unit is passed on to the next workstation.

d. None of the above