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555-605 (Medium)|   Geometry|      
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Bunuel
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A ladder leans against a vertical wall. The base of the ladder is 15 18 Jul 2019, 23:42
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

25% (medium)

Question Stats:

79% (01:33) correct 21% (01:31) wrong based on 38 sessions

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A ladder leans against a vertical wall. The base of the ladder is 15 feet away from the wall and the top of the ladder is 20 feet above the ground on the wall. The wall is perpendicular to the ground. The ladder is pulled farther from the wall causing the top of the ladder to fall by x feet. How far away was the base of the ladder moved?

(1) x = 1.
(2) The length of the ladder is 25 feet.
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A
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
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kitipriyanka
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A ladder leans against a vertical wall. The base of the ladder is 15 18 Jul 2019, 23:51
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We can a right angled Triangle being formed with base=15 and height =20.
With this given info we can find length of ladder=25

1. x=1
when ladder is pulled down h=1
& length of ladder=25
We can find how far is ladder from base and subtract it from previous distance of ladder & ground (15).

So Sufficient.

2. This gives us the length of ladder which we already have.
So insufficient

Hence A
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Bunuel
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