Examen de líneas de espera
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Five ships arrive to unload their cargoes of steel every 12-hour work shift. Each hour that a ship sits idle in line waiting to be unloaded costs the firm a great deal of money, about $1,000 per hour. From experience, management estimates that if one team of stevedores is on duty to handle the unloading work, each ship will wait an average of 7 hours to be unloaded. If two teams are working, the average waiting time drops to 4 hours; for three teams, it’s 3 hours; and for four teams of stevedores, only 2 hours. But each additional team of stevedores is also an expensive proposition. Stevedore team salaries are computed as the number of people in a typical team (assumed to be 50), times the number of hours each person works per day (12 hours), times an hourly salary of $10 per hour. If two teams are employed, the rate is just doubled. ¿ wich is the optimal number of teams of stevedores to have on duty each shift and the total costs.?

  • 2 Teams and 32,000 USD (correct)
  • 3 Teams and 33,000 USD
  • 2 Teams and 3,000 USD
  • 4 Teams and 32,000 USD
  • Arnold´s Mufflers Shop instala 3 mofles por hora, o en promedio uno cada 20 mins, Los clientes llegan al taller en un promedio de 2 clientes por hora. ¿Cuál es el número de clientes que esperan en la fila?

  • 1.33 clientes (correct)
  • 2 clientes
  • 4 clientes
  • 1 cliente
  • Arnold´s Mufflers Shop instala 3 mofles por hora, o en promedio uno cada 20 mins, Los clientes llegan al taller en un promedio de 2 clientes por hora. ¿Cuál es el número de clientes totales en el sistema?

  • 1.33 clientes
  • 2 clientes (correct)
  • 4 clientes
  • 10 clientes
  • Arnold´s Mufflers Shop instala 3 mofles por hora, o en promedio uno cada 20 mins, Los clientes llegan al taller en un promedio de 2 clientes por hora. ¿Cuánto tiempo tiene que esperar cada cliente en la fila?

    <p>40 minutos</p> Signup and view all the answers

    Arnold´s Mufflers Shop instala 3 mofles por hora, o en promedio uno cada 20 mins, Los clientes llegan al taller en un promedio de 2 clientes por hora. ¿Cuánto tiempo invierte cada cliente en todo el sistema?

    <p>60 minutos</p> Signup and view all the answers

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