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milind1979
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typhoidX
Haha... got confused for a while... the signs do not bode well for me on the GMAT... :cry:

Anyway, to simplify, we'll assume 100 people drive on this road.

20 percent of violators do not receive tickets, therefore 80% of the violators do.

We know those who receive tickets consist of 10% of all drivers on this road, so 10 people. In other words, these 10 people make up the aforementioned 80%.

100% of violators would be 10/0.8 = 12.5, so 12 people & half a bloody corpse, or 12.5%.


You solved it well !!!
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sezza61
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I especially like the bloody corpse...people need to make math more fun! That's the best way to learn
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E

30% using double matrix



-------------speed---------no speed
ticket---------.10-------------------
no ticket------.20-------------------
total----------.30-----------.70----------1



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