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When walking, a certain person takes 16 complete steps

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When walking, a certain person takes 16 complete steps [#permalink] New post 15 Dec 2016, 02:28
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Question Stats:

90% (03:29) correct 9% (01:51) wrong based on 21 sessions
When walking, a certain person takes 16 complete steps in 10 seconds. At this rate how many complete steps does the person take in 72 seconds ?

(A) 45
(B) 78
(C) 86
(D) 99
(E) 115
[Reveal] Spoiler: OA

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Re: When walking, a certain person takes 16 complete steps [#permalink] New post 29 Sep 2017, 08:47
Using ratios 16:10 = x:72. Thus, x = (72*16)/10 = 115.2, rounded to 115. Answer E
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Re: When walking, a certain person takes 16 complete steps [#permalink] New post 23 Aug 2018, 16:01
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Carcass wrote:
When walking, a certain person takes 16 complete steps in 10 seconds. At this rate how many complete steps does the person take in 72 seconds ?

(A) 45
(B) 78
(C) 86
(D) 99
(E) 115


We can set up a proportion:

16/10 = n/72

8/5 = n/72

8 x 72 = 5n

576 = 5n

115.2 = n

So 115 complete steps were taken.

Answer: E
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Re: When walking, a certain person takes 16 complete steps   [#permalink] 23 Aug 2018, 16:01
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