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

Author Message
CEO
Joined: 15 Aug 2003
Posts: 3454

Kudos [?]: 919 [0], given: 781

On a certain road, 10 percent of the motorists exceed the [#permalink]

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13 Sep 2003, 06:50
00:00

Difficulty:

(N/A)

Question Stats:

50% (00:08) correct 50% (01:37) wrong based on 8 sessions

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This topic is locked. If you want to discuss this question please re-post it in the respective forum.

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

Kudos [?]: 919 [0], given: 781

Intern
Joined: 03 May 2003
Posts: 28

Kudos [?]: 1 [1], given: 0

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13 Sep 2003, 13:59
1
KUDOS
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%

Kudos [?]: 1 [1], given: 0

GMAT Club Legend
Joined: 09 Sep 2013
Posts: 16678

Kudos [?]: 273 [0], given: 0

Re: On a certain road, 10 percent of the motorists exceed the [#permalink]

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04 Jul 2017, 01:48
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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Kudos [?]: 273 [0], given: 0

Re: On a certain road, 10 percent of the motorists exceed the   [#permalink] 04 Jul 2017, 01:48
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