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Chan and Mieko drove separete cars along the entire length

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Chan and Mieko drove separete cars along the entire length

by AAPL » Mon Apr 22, 2019 6:15 am

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GMAT Paper Tests

Chan and Mieko drove separate cars along the entire length of a certain route. If Chan made the trip in 15 minutes, how many minutes did it take Mieko to make the same trip?

1) Mieko's average speed for the trip was 3/4 of Chan's average speed.
2) The route is 14 miles long.

OA A
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Source: — Data Sufficiency |
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by swerve » Tue Apr 23, 2019 10:39 am

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Statement 1: Chan's speed: Mieko's speed\(=4:3\) and for same distance speed is inversely proportional to time \(\Rightarrow\) c's time: m's time \(=3:4\) and \(3 \rightarrow 15\) minutes that implies \(4\) part represents \(20\) minutes and hence sufficient.

Statement 2: is clearly insufficient.

Therefore, __A__
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