The Manager of a Fast-Food Restaurant Determines That the Average $5 \%$

question 13

Short Answer

The manager of a fast-food restaurant determines that the average time that her customers wait for service is 2 minutes.
The manager wants to advertise that anybody who isn't served within a certain number of minutes gets a free hamburger. But she doesn't want to give away free hamburgers to more than $5 \%$ of her customers. What value of $x$ must she use in the advertisement "if you aren't served within $x$ minutes, you get a free hamburger"?

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Definitions:

Accounts Receivable

Accounts receivable is the money owed to a company by its customers or clients for goods or services that have been delivered but not yet paid for.

Credit Sale

A business transaction in which the purchaser buys goods or services on account, agreeing to pay the seller at a future date.

Pay Later

A type of payment arrangement allowing the purchaser to buy goods or services and defer payment to a future date.

Sales Receipt

A document that records a transaction where the payment is made immediately at the time of sale.