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On a certain road, 10 percent of the motorists exceed the

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CEO
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Joined: 15 Aug 2003
Posts: 3403
On a certain road, 10 percent of the motorists exceed the  [#permalink]

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New post 13 Sep 2003, 06:50
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Question Stats:

50% (00:08) correct 50% (01:37) wrong based on 10 sessions

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On a certain road, 10 percent of the motorists exceed the posted
speed limit and receive speeding tickets, but 20 percent of the
motorists who exceed the posted speed limit do not receive speeding
tickets. What percent of the motorists on that road exceed the posted
speed limit

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Intern
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Joined: 03 May 2003
Posts: 28
I hate this one  [#permalink]

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New post 13 Sep 2003, 13:59
3
The wording sucks in this prob!!

t = total motorists
x = mortorists who exceed speed limit

.2x exceed limit and don't get tickets
so
.8x exceed limit and get tickets

.1t (10% of total exceed and get tickets) = .8x

.1t=.8x
x = .1t/.8

looking for x/t
(.1t/.8)/t = (.1t/.8)(1/t) = .1/.8 = 12.5%
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Re: On a certain road, 10 percent of the motorists exceed the  [#permalink]

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New post 30 Aug 2018, 21:56
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: On a certain road, 10 percent of the motorists exceed the &nbs [#permalink] 30 Aug 2018, 21:56
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