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Eight identical machines can produce 360 aluminum cans per
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Updated on: 21 Sep 2012, 04:42
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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
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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.
Renamed the topic.



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Re: From MitDavidDv: Problem Solving QuestionRate
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07 Jun 2011, 14:38
8 machines/ 360 cans = 5 machines/ x cans 8x= 1800 x=225
(225)(3 hours)= 675 cans. The answer is A.



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Re: From MitDavidDv: Problem Solving QuestionRate
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08 Jun 2011, 03:16
Hi, if 8 machines make 360 then 5 would make 8:360 5:x X= 225 so in 3 hours it would be 225*3=675 Posted from GMAT ToolKit



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Re: From MitDavidDv: Problem Solving QuestionRate
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10 Jun 2011, 22:26
simple unitary method...answer A



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Re: From MitDavidDv: Problem Solving QuestionRate
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21 Sep 2012, 04:38
Hi Everyone,
I have a question, can we solve this question using the W=RT method ? Please reply.. if yes.. please tell me as i am getting wrong answer if i go that way !!
Thanks



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Re: From MitDavidDv: Problem Solving QuestionRate
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21 Sep 2012, 04:47
154238 wrote: Hi Everyone,
I have a question, can we solve this question using the W=RT method ? Please reply.. if yes.. please tell me as i am getting wrong answer if i go that way !!
Thanks 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.
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Re: Eight identical machines can produce 360 aluminum cans per
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21 Sep 2012, 05:06
Thanks man. I appreciate your prompt reply !!



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Re: Eight identical machines can produce 360 aluminum cans per
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15 Nov 2012, 04:16
\(\frac{8}{M}=\frac{360cans}{1hr}==>\frac{1}{M} = 45cans/1hr\)
Calculate 5 machines doing work in 3 hours. \(W=(5)(\frac{45cans}{1hr})(3hrs)==>W=675cans\)



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Re: Eight identical machines can produce 360 aluminum cans per
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05 Jul 2016, 06:49
MitDavidDv wrote: 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 rt=w 8(rt)=360 rt=45 t=1 ===> r=45 rt=w r=45 t=3 n=5 5rt=5(45*3)=675



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Re: Eight identical machines can produce 360 aluminum cans per
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26 Jun 2017, 16:29
Rate of each machine \(= \frac{360}{8}= 45\) Rate of 5 machines \(= 45*5 = 225\) Total cans from 5 machines in 3 hrs = Rate * time = 225*3
At this point the units digit comes out as 5 and I am a stickler for time. The only answer is A.



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Re: Eight identical machines can produce 360 aluminum cans per
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29 Jun 2017, 15:50
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?8 Machines  360 Cans/Hour 1 Machine = 45 Cans/Hour 5 Machines in 3 Hours \(= 45 * 5 * 3 = 675\) Hence, Answer is A
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Re: Eight identical machines can produce 360 aluminum cans per
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02 Sep 2018, 02:19
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