Answered

The USPS headquarters tracked a random sample of mail carriers and learned that approximately 1 out of every 80 pieces of mail was misdelivered. If the average mail carrier delivers 2000 pieces each day, how many pieces of mail would they expect to be misdelivered?



Answer :

This could be solved using cross-multiplying

1/80=x/2000

80x=2000

divide both sides by 80

x=25

25 pieces of mail are expected to be mis-delivered

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