Last visit was: 10 Apr 2025, 10:54 It is currently 10 Apr 2025, 10:54
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

GRE Prep 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 GRE 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.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
PREVIOUS TOPIC
NEXT TOPIC

A certain plastic cup is manufactured by a robot. If 5 such

Tags :
Find Similar Topics  About  Add a Tag

Show Tags
Hide Tags

avatar
rajlal
Intern
Intern
Joined: 22 Aug 2018
Posts: 29
Own Kudos [?]: 71 [1]
Given Kudos: 0
Send PM
A certain plastic cup is manufactured by a robot. If 5 such [#permalink] New post   18 Sep 2018, 04:24
1
Bookmarks
00:00
A
B
C
D
E

Question Stats:

61% (01:10) correct 38% (01:25) wrong based on 65 sessions

Show timer Statistics

A certain plastic cup is manufactured by a robot. If 5 such robots, working at the same individual rate, can manufacture a combined total of 5 cups in 5 seconds, how many seconds will it take 25 robots to manufacture a total of 25 cups?

A) 25
B) 20
C) 15
D) 10
E) 5
ShowHide Answer
Official Answer
E
User avatar
B
amorphous
Retired Moderator
Joined: 07 Jan 2018
Posts: 739
Own Kudos [?]: 1470 [2]
Given Kudos: 93
Send PM

Top Member of the Month
Re: A certain plastic cup is manufactured by a robot. If 5 such [#permalink] New post   19 Sep 2018, 03:24
2
Since 5 Roberts can manufacture 5 cups in 5 seconds.
It must be that 25 Roberts should be able to manufacture 5 cups in 1 second.
Because as Roberts increase time taken to manufacture same number of cups decreases.
However we are required to find the time taken for 25 cups which is 5 times the original amount therefore it will take 5*1 sec = 5 seconds.
Attachments

roberts.png
roberts.png [ 2.02 KiB | Viewed 4891 times ]

User avatar
abhinavk48
Intern
Intern
Joined: 29 Aug 2018
Posts: 9
Own Kudos [?]: 14 [0]
Given Kudos: 0
Location: India
GMAT 1: 720 Q50 V38
WE:Sales (Computer Software)
Send PM
Re: A certain plastic cup is manufactured by a robot. If 5 such [#permalink] New post   19 Sep 2018, 05:19
1
Think of it this was.
it takes 5 machines 5 second to make 5 cups, so their individual work rate must be 1 cup/5 sec (work= rate*time)
now they asked how much time will 25 robot take for 25 cups. we know the each robot makes 1 cup/5 sec. so it should take them 5 sec to make 25 cups.
User avatar
bumpbot
GRE Prep Club Legend
GRE Prep Club Legend
Joined: 07 Jan 2021
Posts: 5241
Own Kudos [?]: 77 [0]
Given Kudos: 0
Send PM
Re: A certain plastic cup is manufactured by a robot. If 5 such [#permalink] New post   31 Jul 2021, 02:59
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep 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.
Prep Club for GRE Bot
gmatclubot
Re: A certain plastic cup is manufactured by a robot. If 5 such [#permalink]
31 Jul 2021, 02:59
Moderators:
adewale223
GRE Instructor
108 posts
bronaugust
GRE Forum Moderator
37 posts
BrushMyQuant
Moderator
1131 posts
VibhuAnurag
GRE Instructor
234 posts

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

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | Prep Club for GRE Rules | Contact