He should leave $ 9.566 as tip.
What is a tip ?
A tip is the % of the total value of your bill you leave for the waiter or the person who gave you the service.
It is completely optional and the % is a variable depending upon various factors.
It is given in the question that
John goes out to eat at a local restaurant
The bill comes to $47.83.
John want to leave a 20% tip
the value of tip in $ = ?
The tip will be equal to
(20/100) * 47.83
(1/5) * 47.83
$ 9.566
Therefore he should leave $ 9.566 as tip.
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