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 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
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 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.
06 Oct 2019, 21:19
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
88% (01:57) correct
12%
(01:48)
wrong
based on 139
sessions
History
Date
Time
Result
Not Attempted Yet
EMPOWERgmat PS Series:
Pack 2, Question 4
Three identical pumps, pumping at the same constant rate, can remove a total of 1,250 gallons of water from a tank in 1 hour. With X of these pumps, 15,000 gallons of water could be removed in 3 hours. What is the value of X?
A. 9
B. 12
C. 15
D. 18
E. 21
48 Hour Window To Win An $85 EMPOWERgmat Tuition Credit (1 Month Free!)
Share your explanation! The GMAT Club member with the most verified Kudos in total on the 5 question PS Block 2 question pack will win an $85 EMPOWERgmat tuition credit, which will entitle the winner to a full month of complete access to the EMPOWERgmat system. Even if you're not sure about your answer or your rationale, share your explanation to help boost your learning and earn a chance to win.
To be eligible, your explanation must be submitted within the 48 hour window after this post was created and should explain your reasoning why the answer you chose is correct
The OA and official explanation will be held until the 48 hour window has lapsed.
Pack 2, Question 4
Three identical pumps, pumping at the same constant rate, can remove a total of 1,250 gallons of water from a tank in 1 hour. With X of these pumps, 15,000 gallons of water could be removed in 3 hours. What is the value of X?
A. 9
B. 12
C. 15
D. 18
E. 21
48 Hour Window To Win An $85 EMPOWERgmat Tuition Credit (1 Month Free!)
Share your explanation! The GMAT Club member with the most verified Kudos in total on the 5 question PS Block 2 question pack will win an $85 EMPOWERgmat tuition credit, which will entitle the winner to a full month of complete access to the EMPOWERgmat system. Even if you're not sure about your answer or your rationale, share your explanation to help boost your learning and earn a chance to win.
To be eligible, your explanation must be submitted within the 48 hour window after this post was created and should explain your reasoning why the answer you chose is correct
The OA and official explanation will be held until the 48 hour window has lapsed.
07 Oct 2019, 01:02
Kudos
Bookmarks
EMPOWERgmatRichC
3 pumps in 1 hour remove 1250 gallons
3 pumps in 3 hour remove 1250*3 gallons
So, 1 pump in 3 hour will remove \(\frac{1250*3}{3}\) or 1250 gallons
Now, 1250 gallons can be removed in 3 hrs by 1 pump..
so 1 gallon can be removed in 3 hrs by \(\frac{1}{1250}\) pump..
Thus, 15,000 gallons can be removed in 3 hrs by \(\frac{15,000}{1250}\) or 12 pumps..
So, \(X=12\)
B
10 Oct 2019, 21:34
Kudos
Bookmarks
OFFICIAL EXPLANATION
Hi All,
We're told that 3 identical pumps, pumping at the same constant rate, can remove a total of 1,250 gallons of water from a tank in 1 hour. With X of these pumps, 15,000 gallons of water could be removed in 3 hours. We're asked for the value of X.
The information in this prompt is ratio-based (1 hour vs. 3 hours; 1,250 gallons vs. 15,000 gallons), so there are a number of different calculations that you can do to solve it. If you do not immediately see how to set up a ratio, then you can still get to the correct answer: you might not immediately recognize that 15,000 is a multiple of 1,250 - but with just a little work, you can prove it.
3 pumps --> 1,250 gallons removed in 1 hour
6 pumps --> 2,500 gallons removed in 1 hour
12 pumps --> 5,000 gallons removed in 1 hour
At this point, you might recognize that 5,000 divides into 15,000....
36 pumps --> 15,000 gallons removed in 1 hour
At this point, we know that we'll need 36 pump-hours worth of work to remove 15,000 gallons of water. Since we want to remove that water over the course of 3 hours, we just have to divide this number by 3 --> 36/3 = 12 machines.
Final Answer:
GMAT assassins aren't born, they're made,
Rich
Hi All,
We're told that 3 identical pumps, pumping at the same constant rate, can remove a total of 1,250 gallons of water from a tank in 1 hour. With X of these pumps, 15,000 gallons of water could be removed in 3 hours. We're asked for the value of X.
The information in this prompt is ratio-based (1 hour vs. 3 hours; 1,250 gallons vs. 15,000 gallons), so there are a number of different calculations that you can do to solve it. If you do not immediately see how to set up a ratio, then you can still get to the correct answer: you might not immediately recognize that 15,000 is a multiple of 1,250 - but with just a little work, you can prove it.
3 pumps --> 1,250 gallons removed in 1 hour
6 pumps --> 2,500 gallons removed in 1 hour
12 pumps --> 5,000 gallons removed in 1 hour
At this point, you might recognize that 5,000 divides into 15,000....
36 pumps --> 15,000 gallons removed in 1 hour
At this point, we know that we'll need 36 pump-hours worth of work to remove 15,000 gallons of water. Since we want to remove that water over the course of 3 hours, we just have to divide this number by 3 --> 36/3 = 12 machines.
Final Answer:
GMAT assassins aren't born, they're made,
Rich
