At a Mexican fast-food chain, a customer a) decides what type of food s/he wants

Question

At a Mexican fast-food chain, a customer a) decides what type of food s/he wants (e.g., burrito, salad, or tacos), b) decides what fillings s/he wants (e.g., chicken, fish, or vegetable), c) decides what toppings s/he wants (e.g., lettuce, guacamole, or cheese), and d) pays for the order that may or may not include a drink. One employee works at each of the steps a) through c), and two employees take care of the payment. Per customer, step a) takes 2 minutes on average, step b) takes 3 minutes on average, step c) takes 1 minute on average, and step d) takes 4 minutes on average. By how much would the system capacity increase if another person is hired for step b)?

1. 75%

2. 50%

3. 25%

4. 100%

Explanation / Answer

the formula to determine the system capacity is total processing time divided by no of workers.

at step b

processing time at b =3mins

system capacity =3/1 =3

at step b one person hired

system capacity=3/2=1.5

increase = (1.5/3) *100 =0.5* 100 =50% increase

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