Last visit was: 03 Sep 2026, 23:47 It is currently 03 Sep 2026, 23:47
Close
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

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 GMAT 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.
Close
Request Expert Reply
Confirm Cancel
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 03 Sep 2026
Posts: 113,112
Own Kudos:
838,960
 [7]
Given Kudos: 111,324
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 113,112
Kudos: 838,960
 [7]
1
Kudos
Add Kudos
6
Bookmarks
Bookmark this Post
User avatar
ShahadatHJ
Joined: 14 Aug 2019
Last visit: 03 Sep 2026
Posts: 155
Own Kudos:
131
 [2]
Given Kudos: 256
Location: Bangladesh
GPA: 3.41
Posts: 155
Kudos: 131
 [2]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
100mitra
Joined: 29 Apr 2019
Last visit: 06 Jul 2022
Posts: 706
Own Kudos:
Given Kudos: 49
Status:Learning
Posts: 706
Kudos: 636
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
bv8562
Joined: 01 Dec 2020
Last visit: 01 Oct 2025
Posts: 403
Own Kudos:
Given Kudos: 360
GMAT 1: 680 Q48 V35
GMAT 1: 680 Q48 V35
Posts: 403
Kudos: 514
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Let the initial quantity of solution be = x
0.08x = 0.2*20
x=50 (D)
avatar
azamatboden
Joined: 04 Apr 2020
Last visit: 01 Sep 2022
Posts: 42
Own Kudos:
Given Kudos: 14
Posts: 42
Kudos: 25
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I have it a little bit more complicated but it makes sense:
0.92x - y = 0.8(x-y)
x-Y = 20

solve these equations and get that x = 50
User avatar
sony1000
Joined: 31 May 2015
Last visit: 14 Nov 2025
Posts: 198
Own Kudos:
Given Kudos: 220
Location: Fiji
Schools: IE
GPA: 1
Schools: IE
Posts: 198
Kudos: 330
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I am not sure if this approach is wrong but works out.

8% solution to 20% solution is 2.5 times saltier

then 2.5 times of the remainder of 20 liters is 50 liters of original solution.
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 39,213
Own Kudos:
Posts: 39,213
Kudos: 1,156
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderator:
Math Expert
113112 posts