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A printer can print 15 pages an hour. How many pages can three printer

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Math Expert
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A printer can print 15 pages an hour. How many pages can three printer  [#permalink]

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New post 28 Mar 2017, 02:55
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

80% (00:58) correct 20% (00:52) wrong based on 87 sessions

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Re: A printer can print 15 pages an hour. How many pages can three printer  [#permalink]

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New post 28 Mar 2017, 02:57
3 printers can print 3*15 pages in an hour =45
Now 12/60*45 =9
Will be the number of pages

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Re: A printer can print 15 pages an hour. How many pages can three printer  [#permalink]

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New post 28 Mar 2017, 02:58
A printer can print 1page in 4 minutes, then in 12, minutes it can print 3pages, likewise there are 3 printer so all together can make 9 pages in 12 minutes^_^, hence E must be the answer

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Re: A printer can print 15 pages an hour. How many pages can three printer  [#permalink]

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New post 28 Mar 2017, 03:01
in one hour 15 pages,, so 3 printers in one hour = 45 pages..

in 12 mins,, 9 pages ,,,ans E
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Re: A printer can print 15 pages an hour. How many pages can three printer  [#permalink]

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New post 28 Mar 2017, 13:47
work = rate x time
15 = rate x 60
rate = 3/4

work = 3/4 x 12
work = 9

Answer is E
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Re: A printer can print 15 pages an hour. How many pages can three printer  [#permalink]

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New post 06 Mar 2018, 08:06
Bunuel wrote:
A printer can print 15 pages an hour. How many pages can three printers print in 12 minutes at the same rate?

A. 3
B. 4
C. 6
D. 8
E. 9


The rate of 3 printers is 45 pages per hour, and, since 12 minutes = 1/5 of an hour, the 3 printers can print 45 x 1/5 = 9 pages in 12 minutes.

Answer: E
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Re: A printer can print 15 pages an hour. How many pages can three printer   [#permalink] 06 Mar 2018, 08:06
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