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08 Sep 2010, 11:40
Kudos
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
66% (00:51) correct
34%
(00:57)
wrong
based on 1355
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If two copying machines work simultaneously at their respective constant rates, how many copies do they produce in 5 minutes?
(1) One of the machines produces copies at the constant rate of 250 copies per minute.
(2) One of the machines produces copies at twice the constant rate of the other machine.
ID 13609
(1) One of the machines produces copies at the constant rate of 250 copies per minute.
(2) One of the machines produces copies at twice the constant rate of the other machine.
ID 13609
28 Jan 2012, 04:13
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RadhaKrishnan
Straight E, though a little bit tricky. All we need to know is the rates of these machines. Though from both statement the rates can be:
250 copies per minute and 500 copies per minute;
250 copies per minute and 125 copies per minute.
General Discussion
08 Sep 2010, 12:05
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udaymathapati
1. obviously INSUFF since you know nothing about the other machine.
2. INSUFF since you dont know the rate - it could be 10/min or 20/min so end result differs
Combine:
M1 = 250/min
M2 COULD be 500/min OR 125/min since M1 could be the machine that produces 250/min AND the same machine that is twice the rate from 2. so as you can see the end result differrs.
E
