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# A certain business printer can print 40 characters per

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Senior Manager
Joined: 19 Feb 2007
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A certain business printer can print 40 characters per [#permalink]

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27 Jun 2007, 10:30
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A certain business printer can print 40 characters per second, which is 4 times as fast as an average printer. If an average printer can print 5 times as fast as an electric typewriter, how many characters per minute can an electric typewriter print?

(A) 2
(B) 32
(C) 50
(D) 120
(E) 600

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Intern
Joined: 23 May 2007
Posts: 1

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27 Jun 2007, 10:51
Answer - D) 120

average printer = 40/4 = 10 char per second = 5 * (x) x = electric typewriter char per sec

x = 2 char per second from above equation

Since the question is asking speed of electric typewriter in char per minute, answer will be 120 char per minute

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Senior Manager
Joined: 28 Feb 2007
Posts: 300

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27 Jun 2007, 10:51
D

business printer----- 40/sec
average printer----- 40/4=10/sec
elctric type---------- 10/5=2/sec

so in 1 min =60*2/sec=120 characters

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Manager
Joined: 14 Mar 2007
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27 Jun 2007, 13:50
B=40p/s = 2400 p/m

B=4A
A=5E

A=600p/m
E=120p/m

D is the answer?

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Director
Joined: 06 Sep 2006
Posts: 736

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27 Jun 2007, 15:41
40 sec.
10 sec.
type writer = 2 words per sec
= 160 per min.

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VP
Joined: 07 Nov 2005
Posts: 1116

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Location: India

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27 Jun 2007, 22:29
asaf wrote:
40 sec.
10 sec.
type writer = 2 words per sec
= 160 per min.

You mean 120
_________________

Trying hard to conquer Quant.

Kudos [?]: 51 [0], given: 1

27 Jun 2007, 22:29
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# A certain business printer can print 40 characters per

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