Events & Promotions
| Last visit was: 06 Sep 2026, 13:35 |
It is currently 06 Sep 2026, 13:35 |
|
|
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 0712:01 AM PDT
-11:59 PM PDT
On the 7th, GMAT Club Tests will be Free! Including all the Quizzes, Questions, and Tests. 12 AM - 11:59 PM PDT
Sep 0712:30 AM EDT
-01:30 AM EDT
Tejas studied hard but kept repeating the same mistakes. After 3 attempts at 645, a focused 4-week strategy helped him identify and fix what was holding him back—leading to a 695 with just 12–15 hours of study per week.- Sep 07
10:00 AM PDT
-11:00 AM PDT
A complete walkthrough of GMAT Club’s free 12-week GMAT study plan: what you study each week, how progress and goals are tracked, how the error log works, and how your practice unlocks paid tools at no cost. 
Sep 0201:00 PM EDT
-11:59 PM EDT
Take 30% off all study plans with code COURSEWORK - Expires on Monday 9/7
Sep 0401:30 AM EDT
-02:30 AM EDT
This Labor Day, turn your hard work into real score gains. From 615→715 in 15 days to 705 in 30 days, our students prove what's possible with personalized, expert guidance. Save up to 25% on 1-on-1 tutoring.
Sep 0410:00 AM EDT
-11:59 PM EDT
We’ve worked incredibly hard to build TTP into the best test prep experience possible, and it would mean a lot to us to win Newsweek’s 2026 Readers’ Choice Award for Best Test Prep. If TTP has helped you, we’d be incredibly grateful for your vote.
Sep 0609:30 AM EDT
-12:30 PM EST
Top scores are possible when you enroll in a powerful EA course, taught live online + 6 months access to TTP OnDemand video courses included! Perfect class schedule and easy course access for working professionals. Class starts Sundays Sept. 6, 2026.- Sep 09
07:00 AM PDT
-10:00 AM PDT
Meet AdComs and explore top Master’s programs - MiM, MiF, MSc, MSBA and more. - Application Fee Waivers - Free 1-Week of GMAT Club Tests: - Master's Application Toolkit - Grand Prize Giveaway - Sep 09
10:00 AM PDT
-11:00 AM PDT
Three MBA applications. Three rejections. No interview invites. A year later, Aman was admitted to Cambridge Judge, SMU, and IMD. In this episode of MBA Admit Stories, Aman shares how he rebuilt his MBA application... 
Sep 1008:00 PM PDT
-09:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
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 2108:00 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
03 Mar 2021, 12:19
Kudos
Bookmarks
SagarV
Response:
The question tells us that one fourth of the water evaporated. If you prefer to work with decimals (or percents), 1/4 is equivalent to 0.25 (or 25%). So, you should have calculated 75% of 0.8x (or multiplied 0.8x by 0.75). With the correct numbers, it will work.
03 Mar 2021, 15:53
Kudos
Bookmarks
Tank holds x gallon of water out of which
Salt - 20X / 100
Water - 80x/ 100 ; After evaporation - 60x/100
After 20 gallon salt ad 30 gallon water added, total -
Salt - 20x/100 + 20
Water - 60x/100 + 30
Now 33 1/3 i.e. 100/3 = (salt / total ) * 100
1/3 = (20x/100 + 20) / (60x/100 + 30)
Solve for x and we can easily get x =150
Salt - 20X / 100
Water - 80x/ 100 ; After evaporation - 60x/100
After 20 gallon salt ad 30 gallon water added, total -
Salt - 20x/100 + 20
Water - 60x/100 + 30
Now 33 1/3 i.e. 100/3 = (salt / total ) * 100
1/3 = (20x/100 + 20) / (60x/100 + 30)
Solve for x and we can easily get x =150
09 Apr 2021, 09:48
Kudos
Bookmarks
SagarV
Response:
Simply because “one fourth of the water” is not 20% of the water, but instead 25% of the water. If you perform the same operations with the correct percent of evaporated water, you’ll get the same expression as I did, which is 0.75 * 0.8x = 0.6x.
18 Feb 2025, 07:18
Kudos
Bookmarks
Initial volume of salt in the saltwater solution = \(\frac{20}{100}x\) = \(0.2x\)
Initial volume of water in the saltwater solution = \(\frac{80}{100}x\) = \(0.8x\)
If \(1/4\) of the water is evaporated, then \(1 - 1/4 = 3/4\) is remaining.
Remaining water = \(\frac{3}{4}(\frac{80}{100}x)\) = \(\frac{3}{5}x\) = \(0.6x\)
After adding 10 gallons of water and 20 gallons of salt to the solution ->
New volume of salt = \(0.2x + 20\)
New volume of water = \(0.6x + 10\)
Total volume of the new salt water solution = \((0.2x + 20) + (0.6x + 10) = 0.8x + 30\)
We know that the new solution has a salt concentration of \(33 \frac{1}{3}\)% = \(33.3333......\)%
\(33.3333......\)% = \(\frac{33.33333.....}{100} = 0.33333...... = \frac{1}{3}\)
So, \(1/3\) volume of the new saltwater solution is equal to the volume of salt we calculated after adding 20 gallons of salt to the initial solution.
\(0.2x + 20 = \frac{1}{3}(0.8x + 30)\)
\(3(0.2x + 20) = 0.8x + 30\)
\(0.6x + 60 = 0.8x + 30\)
\(0.6x - 0.8x = 30 - 60\)
\(-0.2x = -30\)
\(x = \frac{30}{0.2}\)
\(x = \frac{300}{2}\)
\(x = 150\)
Correct option : D
Initial volume of water in the saltwater solution = \(\frac{80}{100}x\) = \(0.8x\)
If \(1/4\) of the water is evaporated, then \(1 - 1/4 = 3/4\) is remaining.
Remaining water = \(\frac{3}{4}(\frac{80}{100}x)\) = \(\frac{3}{5}x\) = \(0.6x\)
After adding 10 gallons of water and 20 gallons of salt to the solution ->
New volume of salt = \(0.2x + 20\)
New volume of water = \(0.6x + 10\)
Total volume of the new salt water solution = \((0.2x + 20) + (0.6x + 10) = 0.8x + 30\)
We know that the new solution has a salt concentration of \(33 \frac{1}{3}\)% = \(33.3333......\)%
\(33.3333......\)% = \(\frac{33.33333.....}{100} = 0.33333...... = \frac{1}{3}\)
So, \(1/3\) volume of the new saltwater solution is equal to the volume of salt we calculated after adding 20 gallons of salt to the initial solution.
\(0.2x + 20 = \frac{1}{3}(0.8x + 30)\)
\(3(0.2x + 20) = 0.8x + 30\)
\(0.6x + 60 = 0.8x + 30\)
\(0.6x - 0.8x = 30 - 60\)
\(-0.2x = -30\)
\(x = \frac{30}{0.2}\)
\(x = \frac{300}{2}\)
\(x = 150\)
Correct option : D
