怎么想都想不通，跪求高手指教！！！！！！

gutter1900 · 发表于 2011-12-19 21:38:29

40. (32847-!-item-!-188;#058&007552)

A recent reportdetermined that although only three percent of drivers on Maryland highwaysequipped their vehicles with radar detectors, thirty-three percent of all vehiclesticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicleswith radar detectors are more likely to exceed the speed limit regularly thanare drivers who do not.

The conclusion drawnabove depends on which of the following assumptions?

(A) Drivers who equiptheir vehicles with radar detectors are less likely to be ticketed forexceeding the speed limit than are drivers who do not.

(B) Drivers who areticketed for exceeding the speed limit are more likely to exceed the speedlimit regularly than are drivers who are not ticketed.

(C) The number ofvehicles that were ticketed for exceeding the speed limit was greater than thenumber of vehicles that were equipped with radar detectors.

(D) Many of thevehicles that were ticketed for exceeding the speed limit were ticketed morethan once in the time period covered by the report.

(E) Drivers onMaryland highways exceeded the speed limit more often than did drivers on otherstate highways not covered in the report.

maggie睿瑛 · 发表于 2011-12-19 22:03:53

是B么？

life2011GMAT · 发表于 2011-12-20 02:25:52

This is OG12-78. You might want to check the OG explaination. Here is my understanding. Hopefully it will help.

Body: 3% equipped radar & 33% ticketed vehicles equipped radar => with radar is more likely receive ticket.
Option: (Assumption) more likely receive ticket is more likely to speed
Conclusion: with radar is more likely to speed

A --> B --> C : with radar--> more likely receive ticket --> more likely to speed

gutter1900 · 发表于 2011-12-23 19:29:44

答案是B 为什么啊？

fifiwong · 发表于 2012-12-16 17:45:55

This is OG12-78. You might want to check the OG explaination. Here is my understanding. Hopefully it will help.

Body: 3% equipped radar & 33% ticketed vehicles equipped radar => with radar is more likely receive ticket.
Option: (Assumption) more likely receive ticket is more likely to speed
Conclusion: with radar is more likely to speed

A --> B --> C : with radar--> more likely receive ticket --> more likely to speed

-- by 会员 life2011GMAT (2011/12/20 2:25:52)

it really helps! thx~

怎么想都想不通，跪求高手指教！！！！！！

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