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What is the length in feet of a ladder 24 feet from the foot of a buil

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What is the length in feet of a ladder 24 feet from the foot of a buil  [#permalink]

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New post 14 Jan 2019, 00:16
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A
B
C
D
E

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  15% (low)

Question Stats:

83% (01:13) correct 17% (01:15) wrong based on 41 sessions

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Re: What is the length in feet of a ladder 24 feet from the foot of a buil  [#permalink]

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New post 14 Jan 2019, 02:05
A ladder is leant against the building to form a right angle triangle with the smaller sides are 18 and 24

(18,24) pair is corresponding to (3,4) after multiplying by 6. so we have a Pythagorean triple (3:4:5).
the third side would be 5 multiplied by 6 = 30

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Re: What is the length in feet of a ladder 24 feet from the foot of a buil  [#permalink]

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New post 14 Jan 2019, 03:26
Bunuel wrote:
What is the length in feet of a ladder 24 feet from the foot of a building that reaches up 18 feet along the wall of the building?


A. 26
B. 28
C. 29
D. 30
E. 32



phythogerous triplet 3:4:5
multiplier here is 6
so ans is 30
IMO D
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Re: What is the length in feet of a ladder 24 feet from the foot of a buil   [#permalink] 14 Jan 2019, 03:26
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