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A certain NYC taxi driver has decided to start charging a

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A certain NYC taxi driver has decided to start charging a [#permalink] New post 20 Nov 2007, 07:27
A certain NYC taxi driver has decided to start charging a rate of r cents per person per mile. How much, in dollars, would it cost 3 people to travel x miles if he decides to give them a 50% discount?

Please provide details. thanks
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 [#permalink] New post 20 Nov 2007, 07:50
r cents per person per mile

x miles: xr cents per person
3 people:3xr cents
=
$3xr/100

50% discount
=> $3xr/200
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 [#permalink] New post 20 Nov 2007, 07:56
Why did you divide by 100?
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 [#permalink] New post 20 Nov 2007, 08:03
To turn cents into dollars.
  [#permalink] 20 Nov 2007, 08:03
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