M1 Practice Problems Littles Law

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School

University of Wisconsin, Platteville *

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4120

Subject

Industrial Engineering

Date

Jan 9, 2024

Type

xlsx

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Uploaded by SuperHumanBook14421

1. Butternut is a ski resort in Massachusetts. One of their triple chair lifts unloads 1296 skiers per hour at the top of the slope. (A triple chair lift can carry three passengers per chair.) The ride from the bottom to the top takes 5 minutes. How many skiers are riding on the lift at any one time? Solution: Given data: Process: Ski Lif Flow unit: Skier I = R x T I = ? skiers R= 1296 skiers/hr T= 5 minutes = 0.083333 hour I = 108.00 skiers

Q2.2 page 30 Consider the baggage check-in of a small airline. Check-in data indicate that from 9 a.m. to 10 a.m., 255 passengers checked in. Moreover, based on counting the number of passengers waiting in line, airport management found that the average number of passengers waiting for check-in was 35. How long did the average passenger have to wait in line? (Round the answer to 2 decimal places.) Solution: Given data: Process: Baggage Check-in Flow unit: Passenger I = R x T I = 35 passengers R= 255 passengers/hr T= ? T= I/R T= 0.14 hour or 8.24 minutes What does T represent? The flow time represents waiting time + check-in time. What would you do if you were asked to cut back T by 50%? Show using Little's Law. Install check-in kiosks Online check-in service

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