Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 1507:00 PM EDT
-09:00 PM EST
Elite scores are possible when you enroll in a powerful GMAT course, taught live online + 6 months access to TTP OnDemand video courses included! Class starts Tues/Thurs Sept. 15, 2026 - Nov. 15, 2027, 7:00pm-9:00pm EST
Sep 2107:00 PM EDT
-10:00 PM EDT
Boost your GMAT score in less than one month in a live online class + 6 months access to TTP OnDemand video courses included! Class starts Mon, Tues, Wed, Thur, Fri Sept. 21, 2026 - Oct. 9, 2027, 7:00pm-10:00pm EST
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
77% (00:54) correct
23%
(01:09)
wrong
based on 99
sessions
History
Date
Time
Result
Not Attempted Yet
If machine X ran continuously at a uniform rate to fill a production order beginning at 8:00 a.m., at what time did the machine finish filling the order?
(1) Machine X was still filling the order at 12:00 noon.
(2) Machine filled 1/3 of the order between 9:00 a.m. and 10:40 a.m.
_________________
(1) Machine X was still filling the order at 12:00 noon.
(2) Machine filled 1/3 of the order between 9:00 a.m. and 10:40 a.m.
_________________
New to the GMAT Club?
- • Questions: Question Bank | Bunuel's Signature Collection
• Tests: GMAT Club Tests | Forum Quiz
• Guides: Quantitative | Critical Reasoning | Reading Comprehension | Ultimate Quant Guide | All You Need for Quant
• Rules: Quantitative | Verbal
IMO B.
Given - If machine X ran continuously at a uniform rate to fill a production order beginning at 8:00 a.m.
To find at what time did the machine finish filling the order lets check given statements.
1st - Machine X was still filling the order at 12:00 noon. So what? We cant say anything from this. Not sufficient.
2nd - Machine filled 1/3 of the order between 9:00 a.m. and 10:40 a.m.
Assuming 'w' as a complete order and efficiency of machine as a 'm'. So, w/3 gets completed in 100 minutes.
therefore equation will be in the form of,
w/3 = m*100 -------(eq1)
Therefore, m = w/300
from here we will able to calculate amount of work machine done in first 1 hr (8:00 - 9:00)
w' = m*60 ------ (eq2)
from both equation w' = w/5
amount of work done till 10:40 am. = w/5 + w/3 = 8w/15
Remaining work = w - (8w/15) = 7w/15
to complete remaining work 7w/15 amount of time taken by machine in minutes (T') will be
7w/15 = m*T'
but m = w/300
7w/15 = w/300 * T'
Solving we will get T' = 140 minutes from 10:40 machine will take more 140mins to finish the job.
Hence Sufficient.
Given - If machine X ran continuously at a uniform rate to fill a production order beginning at 8:00 a.m.
To find at what time did the machine finish filling the order lets check given statements.
1st - Machine X was still filling the order at 12:00 noon. So what? We cant say anything from this. Not sufficient.
2nd - Machine filled 1/3 of the order between 9:00 a.m. and 10:40 a.m.
Assuming 'w' as a complete order and efficiency of machine as a 'm'. So, w/3 gets completed in 100 minutes.
therefore equation will be in the form of,
w/3 = m*100 -------(eq1)
Therefore, m = w/300
from here we will able to calculate amount of work machine done in first 1 hr (8:00 - 9:00)
w' = m*60 ------ (eq2)
from both equation w' = w/5
amount of work done till 10:40 am. = w/5 + w/3 = 8w/15
Remaining work = w - (8w/15) = 7w/15
to complete remaining work 7w/15 amount of time taken by machine in minutes (T') will be
7w/15 = m*T'
but m = w/300
7w/15 = w/300 * T'
Solving we will get T' = 140 minutes from 10:40 machine will take more 140mins to finish the job.
Hence Sufficient.
Posts: 281
Option B
Statement 1: Still running at 12.00 noon. Not sufficient.
Statement 2: 1/3 of the order between 9:00 a.m. and 10:40 a.m. This gives 1/3 order in 100 mins. So the total order will take 300 mins, since the machine is running at a uniform rate. The machine will fill the order 300 mins after 8 am. Sufficient
Statement 1: Still running at 12.00 noon. Not sufficient.
Statement 2: 1/3 of the order between 9:00 a.m. and 10:40 a.m. This gives 1/3 order in 100 mins. So the total order will take 300 mins, since the machine is running at a uniform rate. The machine will fill the order 300 mins after 8 am. Sufficient
Shwarma
Joined: 10 Sep 2023
Last visit: 25 May 2025
Posts: 173
Location: India
Schools: Tepper '27 Ross '27 Foster '27 Kellogg
GMAT Focus 1: 655 Q82 V83 DI84 
GPA: 4
Products:
Option B
1. Gives no info on amount or rate - insufficient
2. 1/3 rd of the work is done in 100 mins, so full work will be done in 300 mins, so time is 1pm - sufficient
1. Gives no info on amount or rate - insufficient
2. 1/3 rd of the work is done in 100 mins, so full work will be done in 300 mins, so time is 1pm - sufficient
IMO B,
(1) Machine X was still filling the order at 12:00 noon. - Insufficient
(2) Machine filled 1/3 of the order between 9:00 a.m. and 10:40 a.m. -Sufficient
Filling 1/3 part took 1Hour 40Min= 100min; remaining 2/3 it will take more 200Min total 300min i.e 1pm. So sufficient to answer
(1) Machine X was still filling the order at 12:00 noon. - Insufficient
(2) Machine filled 1/3 of the order between 9:00 a.m. and 10:40 a.m. -Sufficient
Filling 1/3 part took 1Hour 40Min= 100min; remaining 2/3 it will take more 200Min total 300min i.e 1pm. So sufficient to answer
Moderators:
Announcements
Tuck at Dartmouth
AI at Dartmouth Tuck: How the School Is Preparing Leaders for the Age of Artificial Intelligence
Inside the courses, research, and hands-on learning defining wise, decisive leadership in an AI-driven world.
Read More
Inside the courses, research, and hands-on learning defining wise, decisive leadership in an AI-driven world.
Read More
Top 5 GMAT Debrief Videos
Success stories and strategies from high-scoring candidates.