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On a map, 1/2 inch represents 100 miles. According to this map, how many miles is City X from City Y ?

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On a map, 1/2 inch represents 100 miles. According to this map, how many miles is City X from City Y ?

by BTGmoderatorDC » Wed Feb 24, 2021 3:32 pm

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On a map, 1/2 inch represents 100 miles. According to this map, how many miles is City X from City Y ?

(1) City X is 3 inches from City Y on the map.
(2) Cities X and Y are each 300 miles from City Z.



OA A

Source: Official Guide
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Source: — Data Sufficiency |
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Re: On a map, 1/2 inch represents 100 miles. According to this map, how many miles is City X from City Y ?

by swerve » Sun Feb 28, 2021 11:38 am

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BTGmoderatorDC wrote: ↑
Wed Feb 24, 2021 3:32 pm
 On a map, 1/2 inch represents 100 miles. According to this map, how many miles is City X from City Y ?

(1) City X is 3 inches from City Y on the map.
(2) Cities X and Y are each 300 miles from City Z.



OA A

Source: Official Guide
Given \(1/2\) inch \(= 100\) miles. Find distance of \(x\) to \(y\) in miles.

1) Distance of \(x\) to \(y\) is \(3\) inches \(= 6\cdot 1/2 = 6\cdot 100 = 600\) miles( Sufficient, cancel BCE) \(\Large{\color{green}\checkmark}\)

2) city \(x \& y\) are \(300\) each from city \(z\). With this information, we cannot calculate distance between \(x \& y\). Different values are possible. Not sufficient (Cancel D) \(\Large{\color{red}\chi}\)

Therefore, A
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