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

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

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New post Updated on: 23 Jan 2014, 07:12
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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.
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Re: How long does it take Lee to type a certain document?  [#permalink]

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New post 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.

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

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New post 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.

Answer: C.


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.

Answer: C.



But Bunuel nowhere it says that they were typing the same document ....what if the document given to kim and lee are different ?
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Re: How long does it take Lee to type a certain document?  [#permalink]

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New post 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.

Answer: C.


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

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New post 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.

Answer: C.


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.

Answer: C.



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

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New post 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.

Answer: C.


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

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New post 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.

Answer: C.



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

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New post 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.

Answer: C.



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 .


We are asked about Lee, while (2) talks about Kim.
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New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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