Operations Management Homework Chapter 3 Essay

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Pages: 6

Homework 1 – GMGT 590

Q 3.5 | Step 1: Cut | Step 2: Put Grilled
Stuff on Bagel | Step 3:
Veggies on
Bagel | Step 4:
Cream
Cheese | Step 5:
Wrap | I | 1 | 1 | 1 | 1 | 1 | T | 3 min | 10 min | 5 min | 4 min | 2 min | R | 0.333333333 | 0.1 | 0.2 | 0.25 | 0.5 | % | 100% | 16.67% | 77.78% | 22.20% | 100% | ADJ R | 0.333333333 | .5999 | 0.2571 | 1.126 | 0.5 | | | | | | | Total Bagel | 180 | 100.00% | | | | Grilled Veggie | 30 | 16.67% | | | | Veggie Only | 110 | 61.10% | (+ incoming grilled = 77.78%) | Cream Cheese | 40 | 22.20% | | | | Wrap | 180 | 100.00% | | | |

A) Where in the process is the bottle neck? Step 3, Veggies on Bagel, is the bottleneck B) How many units can the
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Worker 2 is the bottle neck with a thruput rate of 0.01667 B) What is the capacity of this assembly line in units/hour? (1unit/60sec = 1unit/1min = 60min/hr) 60 units/hour C) What is the utilization of worker 4?
= 45/(60+15)=0.6 or 60% utilization D) How long does it take to finish production of 100 units starting with empty process?
= 60 seconds + (100-1)(1/(1/60))
= 60 + (99)(60) = 6000 seconds = 100 minutes = 1.667 hours E) What is the average labor utilization?
Average Labor Utilization = Labor content / (labor content + idle time) = 225 seconds / (225 seconds + 75 seconds) = 0.75 or 75% utilization F) Cost of direct labor with $15/hr wage?
(5 * $15/hr)/60 units/hr = $1.25 per unit | Worker 1 (1,2) | Worker 2 (3) | Worker 3 (4,5) | Worker 4 (6) | Worker 5 (7) | Processing Time | 50 | 35 | 55 | 45 | 40 | Capacity | 0.02 | 0.028571429 | 0.018181818 | 0.022222222 | 0.025 | G) Maximum capacity with reallocation?
1 unit/55 seconds = 1.09 unit/min = 65.45 unit/hour H) Cost of direct labor with $15/hr wage and reallocation?