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# Steven can carry 5 full buckets of water from the well to the roadhous

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Math Expert
Joined: 02 Sep 2009
Posts: 48110
Steven can carry 5 full buckets of water from the well to the roadhous  [#permalink]

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14 Mar 2017, 23:06
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(N/A)

Question Stats:

100% (01:08) correct 0% (00:00) wrong based on 12 sessions

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Steven can carry 5 full buckets of water from the well to the roadhouse in 20 minutes. A fire breaks out in the roadhouse and Steven carries full buckets of water from the well until the fire is quenched from the last bucket an hour and twenty minutes later. How many buckets of water were used in putting out the fire?

A. 30
B. 25
C. 20
D. 15
E. 5

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Re: Steven can carry 5 full buckets of water from the well to the roadhous  [#permalink]

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15 Mar 2017, 00:18
Bunuel wrote:
Steven can carry 5 full buckets of water from the well to the roadhouse in 20 minutes. A fire breaks out in the roadhouse and Steven carries full buckets of water from the well until the fire is quenched from the last bucket an hour and twenty minutes later. How many buckets of water were used in putting out the fire?

A. 30
B. 25
C. 20
D. 15
E. 5

Steve can carry 5 full buckets of water from the well to the roadhouse in 20 minutes
Steve carried "x" full buckets of water for hour and twenty minutes later

1 hour 20 mins = 80 mins

20/5 = 80/x
x = 80*5/20 = 20

Hence option C is correct
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Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 8204
Location: Pune, India
Re: Steven can carry 5 full buckets of water from the well to the roadhous  [#permalink]

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15 Mar 2017, 02:36
1
Bunuel wrote:
Steven can carry 5 full buckets of water from the well to the roadhouse in 20 minutes. A fire breaks out in the roadhouse and Steven carries full buckets of water from the well until the fire is quenched from the last bucket an hour and twenty minutes later. How many buckets of water were used in putting out the fire?

A. 30
B. 25
C. 20
D. 15
E. 5

I am a little doubtful on this question.

"Steven can carry 5 full buckets of water from the well to the roadhouse in 20 minutes."

The assumption here is that it takes him 20 mins to return from the roadhouse back to the well. We have no information about it but the question is a PS question. So to get to the answer, we would need to assume that he takes 20 mins to get back too.

So every round trip delivers 5 buckets and takes 40 mins.
In 1 hr 20 mins i.e. 80 mins, so 10 buckets would be delivered in this time. But note that this doesn't make sense since the fire wouldn't be doused when he reaches the well. It would be doused when we brings the buckets to the roadhouse.

Another explanation could be that he is at the roadhouse, sees the fire, takes 20 mins to reach the well, carries 5 buckets back in next 20 mins, goes back to the well (and hour passes) and gets 5 more buckets in 1 hour 20 mins.That's when the fire is doused. So he uses 10 total buckets.

But 10 is not there in the options.

So it seems that the question assumes that the first line implies that in 20 mins, he carries the buckets and is back at the well. In that case, he would have used 20 buckets but this theory isn't convincing.

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To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: Steven can carry 5 full buckets of water from the well to the roadhous &nbs [#permalink] 15 Mar 2017, 02:36
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