Customers Arrive at the Local Grocery Store at a Steady

question 49

Multiple Choice

Customers arrive at the local grocery store at a steady rate of 40 an hour. Thirty percent of these customers purchase 10 items or less and go to the express line where they enjoy an average checkout time of 5 minutes. Customers that don't meet the express line criterion go to checkout line #2 where they spend an average of 10 minutes checking out. How many people are checking out in both lines on average?

• A) less than or equal to 1.0
• B) greater than 1.0 but less than or equal to 3.0
• C) greater than 3.0 but less than or equal to 5.0
• D) greater than 5.0

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