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Updated on: 21 Sep 2012, 04:42
Originally posted by MitDavidDv on 07 Jun 2011, 14:31.
Last edited by Bunuel on 21 Sep 2012, 04:42, edited 1 time in total.
Last edited by Bunuel on 21 Sep 2012, 04:42, edited 1 time in total.
Renamed the topic.
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
92% (01:24) correct
8%
(01:43)
wrong
based on 621
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Eight identical machines can produce 360 aluminum cans per hour. If all of the machines work at the same constant rate, how many cans could 5 such machines produce in 3 hours?
A. 675
B. 750
C. 1,800
D. 5,900
E. 7,500
A. 675
B. 750
C. 1,800
D. 5,900
E. 7,500
21 Sep 2012, 04:47
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154238
Eight identical machines can produce 360 aluminum cans per hour. If all of the machines work at the same constant rate, how many cans could 5 such machines produce in 3 hours?
A. 675
B. 750
C. 1,800
D. 5,900
E. 7,500
(rate of one machine)*(number of machines)*(time)=(work done) --> (rate of one machine)*8*1=360 --> (rate of one machine)=45 cans per hour.
Now, 5 such machines in 3 hours can produce (rate of one machine)*(number of machines)*(time)=45*5*3=675 cans.
Answer: A.
Hope it's clear.
General Discussion
07 Jun 2011, 14:38
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8 machines/ 360 cans = 5 machines/ x cans
8x= 1800
x=225
(225)(3 hours)= 675 cans. The answer is A.
8x= 1800
x=225
(225)(3 hours)= 675 cans. The answer is A.
!! 
