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A ladder that is 10 meters long is leaning against a wall. The base

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A ladder that is 10 meters long is leaning against a wall. The base [#permalink]

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New post 01 Aug 2017, 13:39
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Question Stats:

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A ladder that is 10 meters long is leaning against a wall. The base of the ladder is on the floor 6 meters from the wall. What is the distance, in meters, from the bottom of the wall
to the point where the ladder touches the wall?

(A) 6
(B) 8
(C) 9
(D) 10
(E) 2√34
[Reveal] Spoiler: OA

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Re: A ladder that is 10 meters long is leaning against a wall. The base [#permalink]

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New post 01 Aug 2017, 14:05
Bunuel wrote:
A ladder that is 10 meters long is leaning against a wall. The base of the ladder is on the floor 6 meters from the wall. What is the distance, in meters, from the bottom of the wall
to the point where the ladder touches the wall?

(A) 6
(B) 8
(C) 9
(D) 10
(E) 2√34



100^2 = 6^2 + x^2
(The ladder will make a right angle triangle against the wall)

x=8

Kudos [?]: 7 [0], given: 123

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Joined: 03 May 2017
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Re: A ladder that is 10 meters long is leaning against a wall. The base [#permalink]

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New post 01 Aug 2017, 16:05
Bunuel wrote:
A ladder that is 10 meters long is leaning against a wall. The base of the ladder is on the floor 6 meters from the wall. What is the distance, in meters, from the bottom of the wall
to the point where the ladder touches the wall?

(A) 6
(B) 8
(C) 9
(D) 10
(E) 2√34


6:8:10, rht.. opposite =8, B.

Kudos [?]: 14 [0], given: 13

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Joined: 13 Mar 2017
Posts: 452

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Location: India
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WE: Engineering (Energy and Utilities)
Re: A ladder that is 10 meters long is leaning against a wall. The base [#permalink]

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New post 01 Aug 2017, 22:17
Bunuel wrote:
A ladder that is 10 meters long is leaning against a wall. The base of the ladder is on the floor 6 meters from the wall. What is the distance, in meters, from the bottom of the wall
to the point where the ladder touches the wall?

(A) 6
(B) 8
(C) 9
(D) 10
(E) 2√34


The ladder, the base of the floor and the wall makes a right angle triangle. say ABC

Now AB = 10 ,
BC = 6
CA = ?

We should remember the Pythagorean triplet to solve it faster.
So, 3,4,5 is a Pythagorean triplet and their multiples is also a Pythagorean Triplet
i.e. 6,8,10.

So, CA = 8

Answer B

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Re: A ladder that is 10 meters long is leaning against a wall. The base   [#permalink] 01 Aug 2017, 22:17
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A ladder that is 10 meters long is leaning against a wall. The base

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