Author 
Message 
TAGS:

Hide Tags

Manager
Joined: 28 Jan 2011
Posts: 76
Location: Tennessee
Schools: Belmont University

Eight identical machines can produce 360 aluminum cans per
[#permalink]
Show Tags
Updated on: 21 Sep 2012, 04:42
Question Stats:
93% (00:58) correct 7% (00:57) wrong based on 479 sessions
HideShow timer Statistics
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
Official Answer and Stats are available only to registered users. Register/ Login.
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.



Manager
Joined: 28 Jan 2011
Posts: 76
Location: Tennessee
Schools: Belmont University

Re: From MitDavidDv: Problem Solving QuestionRate
[#permalink]
Show Tags
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.



Manager
Joined: 03 Jun 2010
Posts: 133
Location: Dubai, UAE
Schools: IE Business School, Manchester Business School, HEC Paris, Rotterdam School of Management, Babson College

Re: From MitDavidDv: Problem Solving QuestionRate
[#permalink]
Show Tags
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



Manager
Joined: 08 Sep 2010
Posts: 134

Re: From MitDavidDv: Problem Solving QuestionRate
[#permalink]
Show Tags
10 Jun 2011, 22:26
simple unitary method...answer A
_________________
My will shall shape the future. Whether I fail or succeed shall be no man's doing but my own.
If you like my explanations award kudos.



Intern
Joined: 09 Sep 2012
Posts: 28
Location: United States

Re: From MitDavidDv: Problem Solving QuestionRate
[#permalink]
Show Tags
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



Math Expert
Joined: 02 Sep 2009
Posts: 49300

Re: From MitDavidDv: Problem Solving QuestionRate
[#permalink]
Show Tags
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.
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



Intern
Joined: 09 Sep 2012
Posts: 28
Location: United States

Re: Eight identical machines can produce 360 aluminum cans per
[#permalink]
Show Tags
21 Sep 2012, 05:06
Thanks man. I appreciate your prompt reply !!



Senior Manager
Joined: 13 Aug 2012
Posts: 436
Concentration: Marketing, Finance
GPA: 3.23

Re: Eight identical machines can produce 360 aluminum cans per
[#permalink]
Show Tags
15 Nov 2012, 04:16
\(\frac{8}{M}=\frac{360cans}{1hr}==>\frac{1}{M} = 45cans/1hr\) Calculate 5 machines doing work in 3 hours. \(W=(5)(\frac{45cans}{1hr})(3hrs)==>W=675cans\)
_________________
Impossible is nothing to God.



Intern
Joined: 20 Oct 2015
Posts: 38

Re: Eight identical machines can produce 360 aluminum cans per
[#permalink]
Show Tags
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



Manager
Joined: 22 Nov 2016
Posts: 226
Location: United States
Concentration: Leadership, Strategy
GPA: 3.4

Re: Eight identical machines can produce 360 aluminum cans per
[#permalink]
Show Tags
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.
_________________
Kudosity killed the cat but your kudos can save it.



Retired Moderator
Joined: 19 Mar 2014
Posts: 961
Location: India
Concentration: Finance, Entrepreneurship
GPA: 3.5

Re: Eight identical machines can produce 360 aluminum cans per
[#permalink]
Show Tags
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
_________________
"Nothing in this world can take the place of persistence. Talent will not: nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not: the world is full of educated derelicts. Persistence and determination alone are omnipotent."
Best AWA Template: https://gmatclub.com/forum/howtoget60awamyguide64327.html#p470475



NonHuman User
Joined: 09 Sep 2013
Posts: 8131

Re: Eight identical machines can produce 360 aluminum cans per
[#permalink]
Show Tags
02 Sep 2018, 02:19
Hello from the GMAT Club BumpBot! Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up  doing my job. I think you may find it valuable (esp those replies with Kudos). Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Books  GMAT Club Tests  Best Prices on GMAT Courses  GMAT Mobile App  Math Resources  Verbal Resources




Re: Eight identical machines can produce 360 aluminum cans per &nbs
[#permalink]
02 Sep 2018, 02:19






