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Challenge Distance Problem

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Challenge Distance Problem

by Abdulla » Sun Jun 14, 2009 2:30 pm
Edwin is planning to drive from Boston to New Orleans. By what percent would his travel time be reduced if Edwin decides to split the driving time equally with his friend George, instead of making the trip alone?

(1) The driving distance from Boston to New Orleans is 1500 miles.

(2) George’s driving speed is 1.5 times Edwin’s driving speed.

OA is B
Abdulla
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Source: — Data Sufficiency |
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by tohellandback » Sun Jun 14, 2009 7:48 pm
B because
1) not suff: we know the distance, but Edwin splits the time and not the distance. to know the time we need more information
2) Sufficient: we know the ratio of speed so we can find the ration of time
The powers of two are bloody impolite!!
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