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distance between doors

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distance between doors

by blaster » Fri Sep 03, 2010 3:27 am
A certain straight corridor has four doors, A, B, C and D (in that order) leading off from the same side. How far apart are doors B and C?

The distance between doors B and D is 10 meters.
The distance between A and C is 12 meters.
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Source: — Data Sufficiency |

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by Rahul@gurome » Fri Sep 03, 2010 3:58 am
blaster wrote:A certain straight corridor has four doors, A, B, C and D (in that order) leading off from the same side. How far apart are doors B and C?

The distance between doors B and D is 10 meters.
The distance between A and C is 12 meters.
(1) is definitely NOT SUFFICIENT.
(2) is again NOT SUFFICIENT.

Combining (1) and (2), BD = 10 m and AC = 12 m, but this also doesn't help us to find the distance between doors B and C.

The correct answer is [spoiler](E)[/spoiler].
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