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Sub 505 Level|   Work and Rate Problems|                  
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Bunuel
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 29 Jul 2018, 02:40
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Working at a constant rate, a copy machine makes 20 copies of a one-page document per minute. If the machine works at this constant rate, how many hours does it take to make 4,800 copies of a one-page document?

A. 4
B. 5
C. 6
D. 7
E. 8


(PS03439)
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A
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 29 Jul 2018, 02:53
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Bunuel
Working at a constant rate, a copy machine makes 20 copies of a one-page document per minute. If the machine works at this constant rate, how many hours does it take to make 4,800 copies of a one-page document?
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20 Copies = 1 Min
1 Copy = 1 / 20 Min

Therefore,
4800 Copies = 4800 / 20 Min
4800 Copies = 240 Min = 240 / 60 Hrs = 4 Hrs

Hence, A.
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 03 Aug 2018, 15:06
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Bunuel
Working at a constant rate, a copy machine makes 20 copies of a one-page document per minute. If the machine works at this constant rate, how many hours does it take to make 4,800 copies of a one-page document?

A. 4
B. 5
C. 6
D. 7
E. 8
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If the copy machine can make 20 copies of a one-page document per minute, then it can make 20 x 60 = 1,200 copies per hour. So it will take 4,800/1,200 = 4 hours to make 4,800 copies.

Answer: A
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 04 Aug 2018, 08:07
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Bunuel
Working at a constant rate, a copy machine makes 20 copies of a one-page document per minute. If the machine works at this constant rate, how many hours does it take to make 4,800 copies of a one-page document?

A. 4
B. 5
C. 6
D. 7
E. 8


NEW question from GMAT® Quantitative Review 2019



(PS03439)
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The efficiency of the machine per hour is \(20*60 = 1200\)

So, To produce \(4800\) copies time required is \(\frac{4800}{1200} = 4\) Hours, Answer must be (A)
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 07 Aug 2018, 08:56
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Bunuel
Working at a constant rate, a copy machine makes 20 copies of a one-page document per minute. If the machine works at this constant rate, how many hours does it take to make 4,800 copies of a one-page document?

A. 4
B. 5
C. 6
D. 7
E. 8


NEW question from GMAT® Quantitative Review 2019



(PS03439)
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------------------------------------------------------------------------------------------------------------------------------------------------


20 copies in 60 seconconds

20/60=3 seconds per 1 copy
4,800 copies * 3seconds= 14400 seconds
14400/per 60=240 minutes
240 minutes/60=4 hours
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 02 Oct 2018, 06:42
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Copy machine makes 20 copies=1 min
So, 4800 copies=4800/20= 240 mins

240 mins=240/60 = 4 hrs

(A)
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 28 Jun 2019, 10:43
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20 copies per minute is equivalent to 60x20 copies/hour = 1200 copies/hour

dividing 4800/1200 or to make it more simple 48/12 the answer is 4.

so (A) is the answer.
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 06 Aug 2019, 17:59
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Chain Rule:

Let r be the rate, now

r * 1 minute= 20 copies,
multiply 240 on both sides-

r * 240 minutes = 4800 copies

So, 240 minutes is basically 4 hours

Bunuel
Working at a constant rate, a copy machine makes 20 copies of a one-page document per minute. If the machine works at this constant rate, how many hours does it take to make 4,800 copies of a one-page document?

A. 4
B. 5
C. 6
D. 7
E. 8


NEW question from GMAT® Quantitative Review 2019



(PS03439)
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 15 Aug 2019, 04:55
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By Taking ratios:

Time taken to make 4,800 copies of a one-page document = X

Therefore,

20 copies /1min = 4800 copies/X min
Solve for X,
X= 240 mins
X= 4 hours.
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Working at a constant rate, a copy machine makes 20 copies of a one-pa 02 Sep 2024, 22:01
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