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# How long does it take Lee to type a certain document?

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Intern
Joined: 09 Sep 2013
Posts: 19
How long does it take Lee to type a certain document?  [#permalink]

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Updated on: 23 Jan 2014, 07:12
1
4
00:00

Difficulty:

15% (low)

Question Stats:

70% (00:43) correct 30% (00:35) wrong based on 267 sessions

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How long does it take Lee to type a certain document?

(1) Lee types at a rate of 45 words per minute.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes.

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Originally posted by nfr007 on 23 Jan 2014, 07:09.
Last edited by Bunuel on 23 Jan 2014, 07:12, edited 1 time in total.
Edited the question.
Math Expert
Joined: 02 Sep 2009
Posts: 52161
Re: How long does it take Lee to type a certain document?  [#permalink]

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23 Jan 2014, 07:16
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

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Re: How long does it take Lee to type a certain document?  [#permalink]

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23 Jan 2014, 09:00
Bunuel wrote:
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

Bunuel wrote:
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

But Bunuel nowhere it says that they were typing the same document ....what if the document given to kim and lee are different ?
Current Student
Joined: 26 May 2013
Posts: 28
Location: United States
Surendra: Cherukuri
Concentration: Operations, Technology
GMAT 1: 670 Q48 V34
GMAT 2: 670 Q47 V35
GMAT 3: 720 Q50 V36
GPA: 4
WE: Research (Telecommunications)
Re: How long does it take Lee to type a certain document?  [#permalink]

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23 Jan 2014, 14:17
Bunuel wrote:
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

Hi Bunuel,
In (1) and (2) the persons are different then how can both together be sufficient?
Math Expert
Joined: 02 Sep 2009
Posts: 52161
Re: How long does it take Lee to type a certain document?  [#permalink]

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23 Jan 2014, 23:46
nfr007 wrote:
Bunuel wrote:
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

Bunuel wrote:
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

But Bunuel nowhere it says that they were typing the same document ....what if the document given to kim and lee are different ?

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes. "The document " must refer to Leo's document.
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Joined: 26 May 2013
Posts: 28
Location: United States
Surendra: Cherukuri
Concentration: Operations, Technology
GMAT 1: 670 Q48 V34
GMAT 2: 670 Q47 V35
GMAT 3: 720 Q50 V36
GPA: 4
WE: Research (Telecommunications)
Re: How long does it take Lee to type a certain document?  [#permalink]

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28 Jan 2014, 06:03
cherukuri1011 wrote:
Bunuel wrote:
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

Hi Bunuel,
In (1) and (2) the persons are different then how can both together be sufficient?

I got it. I should read questions carefully
Intern
Joined: 05 Jun 2016
Posts: 21
Re: How long does it take Lee to type a certain document?  [#permalink]

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23 May 2017, 07:20
Bunuel wrote:
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

Hi Bunuel

why the below solution is wrong :

50 words / min = 1.4 min
45 words / min = x

Now as his typing speed = 45 words / min therefore the time = 1.26 min .
Math Expert
Joined: 02 Sep 2009
Posts: 52161
Re: How long does it take Lee to type a certain document?  [#permalink]

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23 May 2017, 07:23
1
Bobbyvg wrote:
Bunuel wrote:
How long does it take Lee to type a certain document?

Time = Job/Rate

(1) Lee types at a rate of 45 words per minute. We have the rate only. Not sufficient.

(2) Typing at a rate of 50 words per minute, Kim can type the document in 1.4 minutes --> Job = Rate*Time = 50*1.4 = 70 pages. We have only the amount f the job to be done. Not sufficient.

(1)+(2) We know both the rate and the amount of the job, hence we can get the time needed to complete it. Sufficient.

Hi Bunuel

why the below solution is wrong :

50 words / min = 1.4 min
45 words / min = x

Now as his typing speed = 45 words / min therefore the time = 1.26 min .

_________________
Re: How long does it take Lee to type a certain document? &nbs [#permalink] 23 May 2017, 07:23
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