Operations Management: An Integrated Approach, 5th Edition

APPENDIX A

Solutions to Odd-Numbered Problems

Solutions to selected problems are available on the Student Web site. To access these solutions, go to www.wiley.com/college/reid. Select the fourth edition, then Student Resources; and then Selected Solutions.

Chapter 2

1. Productivity of worker 1 = 1000 labels/30 minutes = 33.3 labels per minute

Productivity of worker 2 = 850 labels/20 minutes = 42.5 labels per minute

Worker 2 is more productive.

3. Productivity of older model machine = 6 loaves/5 hours = 1.2 loaves per hour

Productivity of newer model machine = 4 loaves/2 hours = 2.0 loaves per hour

The newer machine is more productive.

5. Productivity using former method = 3 walls/45 minutes = 0.07 walls per minute

Productivity using new method = 2 walls/20 minutes = 0.10 walls per minute

The new method is more productive.

7. a. Using only the nondefective production, productivity went from (20,000 × 0.85) = 17,000 units/month to (25,000 × 0.91) = 22,750 units/month

b. Change in productivity = (22,750 – 17,000)/17,000 3 100% = 33.8% increase

9. Work crew	Productivity
Anna, Sue, and Tim	10 homes/35 hours = 0.29 homes per hour
Jim, Jose, and Andy	15 homes/45 hours = 0.33 homes per hour
Dan, Wendy, and Carry	18 homes/56 hours = 0.32 homes per hour
Rosie, Chandra, and Seth	10 homes/30 hours = 0.33 homes per hour
Sherry, Vicky, and Roger	18 homes/42 hours = 0.43 homes per hour

Sherry, Vicky, and Roger are the most productive group.

Chapter 3

1. a. Total Cost = $40,000 ...