GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 23 Oct 2019, 11:54

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Eight identical machines can produce 360 aluminum cans per

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Manager
Manager
User avatar
Joined: 28 Jan 2011
Posts: 74
Location: Tennessee
Schools: Belmont University
Eight identical machines can produce 360 aluminum cans per  [#permalink]

Show Tags

New post Updated on: 21 Sep 2012, 04:42
4
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

94% (01:21) correct 6% (01:40) wrong based on 565 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

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
Manager
User avatar
Joined: 28 Jan 2011
Posts: 74
Location: Tennessee
Schools: Belmont University
Re: From MitDavidDv: Problem Solving Question-Rate  [#permalink]

Show Tags

New post 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
Manager
avatar
Joined: 03 Jun 2010
Posts: 120
Location: Dubai, UAE
Schools: IE Business School, Manchester Business School, HEC Paris, Rotterdam School of Management, Babson College
GMAT ToolKit User
Re: From MitDavidDv: Problem Solving Question-Rate  [#permalink]

Show Tags

New post 08 Jun 2011, 03:16
1
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

Image Posted from GMAT ToolKit
Manager
Manager
avatar
Joined: 08 Sep 2010
Posts: 99
Re: From MitDavidDv: Problem Solving Question-Rate  [#permalink]

Show Tags

New post 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
Intern
avatar
Joined: 09 Sep 2012
Posts: 26
Location: United States
Re: From MitDavidDv: Problem Solving Question-Rate  [#permalink]

Show Tags

New post 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
User avatar
V
Joined: 02 Sep 2009
Posts: 58464
Re: From MitDavidDv: Problem Solving Question-Rate  [#permalink]

Show Tags

New post 21 Sep 2012, 04:47
4
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.
_________________
Intern
Intern
avatar
Joined: 09 Sep 2012
Posts: 26
Location: United States
Re: Eight identical machines can produce 360 aluminum cans per  [#permalink]

Show Tags

New post 21 Sep 2012, 05:06
Thanks man. I appreciate your prompt reply :-D !!
Senior Manager
Senior Manager
User avatar
Joined: 13 Aug 2012
Posts: 399
Concentration: Marketing, Finance
GPA: 3.23
GMAT ToolKit User
Re: Eight identical machines can produce 360 aluminum cans per  [#permalink]

Show Tags

New post 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
Intern
User avatar
Joined: 20 Oct 2015
Posts: 36
Re: Eight identical machines can produce 360 aluminum cans per  [#permalink]

Show Tags

New post 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
Manager
User avatar
S
Joined: 22 Nov 2016
Posts: 202
Location: United States
Concentration: Leadership, Strategy
GPA: 3.4
Reviews Badge
Re: Eight identical machines can produce 360 aluminum cans per  [#permalink]

Show Tags

New post 26 Jun 2017, 16:29
1
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
User avatar
P
Joined: 19 Mar 2014
Posts: 921
Location: India
Concentration: Finance, Entrepreneurship
GPA: 3.5
GMAT ToolKit User
Re: Eight identical machines can produce 360 aluminum cans per  [#permalink]

Show Tags

New post 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/how-to-get-6-0-awa-my-guide-64327.html#p470475
Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 13421
Re: Eight identical machines can produce 360 aluminum cans per  [#permalink]

Show Tags

New post 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 Club Bot
Re: Eight identical machines can produce 360 aluminum cans per   [#permalink] 02 Sep 2018, 02:19
Display posts from previous: Sort by

Eight identical machines can produce 360 aluminum cans per

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne