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work, time, distance and speed

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Intern
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Joined: 04 Oct 2015
Posts: 12

Kudos [?]: 6 [0], given: 3

work, time, distance and speed [#permalink]

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New post 16 Dec 2015, 12:22
Five men can move a weight of 125 kg through a distance of 5 meters in 10 minutes. how much time will be taken by 10 men to move a weight of 250 kg through a distance of 15 meters?

options:
1) 10 minutes
2) 20 minutes
3) 30 minutes
4) 40 minutes


well, my answer came out to be 3.33 minutes.

my way of doing was:
(125)/(5*10*5) = (250)/(10*x*15)
so, x=3.33 minutes
I suppose it is wrong.

so, please help me quickly as my exam date is fast approaching.

Kudos [?]: 6 [0], given: 3

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Economist GMAT Tutor Instructor
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Joined: 03 Sep 2015
Posts: 49

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Re: work, time, distance and speed [#permalink]

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New post 21 Mar 2016, 18:15
5 men 125kg 5m in 10 mins
implies 1 man 125kg 1m in 10 mins
implies 1 man 250kg 0.5m in 10 mins
implies 10 men 250kg 0.5m in 1 min
implies 10 men 250kg 15m in 30 mins
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Kudos [?]: 76 [0], given: 0

Re: work, time, distance and speed   [#permalink] 21 Mar 2016, 18:15
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