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.
Apr 2301:30 AM EDT
-02:30 AM EDT
Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
Apr 2212:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
01 Apr 2026, 19:00
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
39% (02:31) correct
61%
(02:10)
wrong
based on 61
sessions
History
Date
Time
Result
Not Attempted Yet
An inspection agency follows these guidelines for newly laid pipelines: all of the pipeline up to kilometer 60 is to be inspected; in addition, 2/3 of any portion of the pipeline between kilometer 60 and kilometer 210 that exists is to be inspected; and no part of the pipeline beyond kilometer 210 is to be inspected. The agency was assigned to inspect a newly laid pipeline in accordance with these guidelines. How long was the pipeline?
(1) A total of 160 kilometers of the pipeline was inspected.
(2) The length of the pipeline that was inspected was at least 16/21 of the total length of the pipeline.
Edited the stem.
(1) A total of 160 kilometers of the pipeline was inspected.
(2) The length of the pipeline that was inspected was at least 16/21 of the total length of the pipeline.
Edited the stem.
Experience GMAT Club Test Questions
Yes, you've landed on a GMAT Club Tests question
Craving more? Unlock our full suite of GMAT Club Tests here
Want to experience more? Get a taste of our tests with our free trial today
Rise to the challenge with GMAT Club Tests. Happy practicing!
04 Apr 2026, 01:45
Kudos
Bookmarks
GMAT Club Official Solution:
A pipeline inspection team was assigned to inspect a newly laid pipeline. According to the inspection plan, all of the first 60 kilometers of the pipeline were inspected, 2/3 of the next 150 kilometers were inspected, and no part of the pipeline beyond the first 210 kilometers was inspected. How long was the pipeline?
(1) A total of 160 kilometers of the pipeline was inspected.
The maximum possible inspected length is
60 + 2/3 * 150 = 160
So for 160 kilometers to have been inspected, the pipeline must have been at least 210 kilometers long.
Not sufficient.
(2) The length of the pipeline that was inspected was at least 16/21 of the total length of the pipeline.
From the inspection plan, the greatest possible inspected length is
60 + 2/3 * 150 = 160
If the pipeline had been longer than 210 kilometers, the fraction inspected would have been 160/(more than 210), which is less than 160/210 = 16/21. Since (2) says that the fraction inspected was at least 16/21, the pipeline must have been no more than 210 kilometers long. Not sufficient.
(1) + (2):
From (1), the pipeline was at least 210 kilometers long.
From (2), the pipeline was no more than 210 kilometers long.
Therefore, the pipeline was exactly 210 kilometers long.
Sufficient.
Answer: C.
A pipeline inspection team was assigned to inspect a newly laid pipeline. According to the inspection plan, all of the first 60 kilometers of the pipeline were inspected, 2/3 of the next 150 kilometers were inspected, and no part of the pipeline beyond the first 210 kilometers was inspected. How long was the pipeline?
(1) A total of 160 kilometers of the pipeline was inspected.
The maximum possible inspected length is
60 + 2/3 * 150 = 160
So for 160 kilometers to have been inspected, the pipeline must have been at least 210 kilometers long.
Not sufficient.
(2) The length of the pipeline that was inspected was at least 16/21 of the total length of the pipeline.
From the inspection plan, the greatest possible inspected length is
60 + 2/3 * 150 = 160
If the pipeline had been longer than 210 kilometers, the fraction inspected would have been 160/(more than 210), which is less than 160/210 = 16/21. Since (2) says that the fraction inspected was at least 16/21, the pipeline must have been no more than 210 kilometers long. Not sufficient.
(1) + (2):
From (1), the pipeline was at least 210 kilometers long.
From (2), the pipeline was no more than 210 kilometers long.
Therefore, the pipeline was exactly 210 kilometers long.
Sufficient.
Answer: C.
General Discussion
02 Apr 2026, 22:59
Kudos
Bookmarks
So the question is slightly tricky with the use of word ‘that exists’ meaning pipeline may or may not even be till 210 kms
Let the total length be L
GIVEN ;
first 60 km is inspected
Next 2/3 * (L-60) is inspected
If pipeline is more than or equal to 210 then 60+150*2/3=160 km is inspected
Statement 1: total inspected length given is 160 km
So if L=210 we get inspected length as 160km
However if L> 210km then also we get 160km. —- insufficient
Statement 2:
It says the length of pipeline inspected was at least 16/21 L
Let’s say if L is 60<L<=210
Equation becomes 60+(L-60) *2/3 >= 16/21 L
Solving this we get L<= 210 but no exact value of L
Which satisfy the equation
Now if L >210
16/21 L <= 160
L<= 210 but we took L >210 so this doesn’t satisfy our condition so No Solution —— insufficient
Together
From statement 1: L>=210
From statement 2: L = 60<L<=210
So L=210km —— sufficient Ans C
Let the total length be L
GIVEN ;
first 60 km is inspected
Next 2/3 * (L-60) is inspected
If pipeline is more than or equal to 210 then 60+150*2/3=160 km is inspected
Statement 1: total inspected length given is 160 km
So if L=210 we get inspected length as 160km
However if L> 210km then also we get 160km. —- insufficient
Statement 2:
It says the length of pipeline inspected was at least 16/21 L
Let’s say if L is 60<L<=210
Equation becomes 60+(L-60) *2/3 >= 16/21 L
Solving this we get L<= 210 but no exact value of L
Which satisfy the equation
Now if L >210
16/21 L <= 160
L<= 210 but we took L >210 so this doesn’t satisfy our condition so No Solution —— insufficient
Together
From statement 1: L>=210
From statement 2: L = 60<L<=210
So L=210km —— sufficient Ans C
