Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 30 Aug 2014, 20:24

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Solution Y is 30 percent liquid X and 70 percent water. If 2

Author Message
TAGS:
Intern
Joined: 26 Mar 2012
Posts: 10
Followers: 0

Kudos [?]: 0 [0], given: 11

Solution Y is 30 percent liquid X and 70 percent water. If 2 [#permalink]  06 Apr 2012, 11:58
00:00

Difficulty:

35% (medium)

Question Stats:

75% (03:15) correct 25% (01:58) wrong based on 133 sessions
Solution Y is 30 percent liquid X and 70 percent water. If 2 kilograms of water evaporate from 8 kilograms of solution Y and 2 kilograms of solution Y are added to the remaining 6 kilograms of liquid, what percent of this new solution is liquid X?

A. 30%
B. 33 1/3%
C. 37 1/2%
D. 40%
E. 50%

What is the easiest way to approach this type of problem and solve under 2 min.
[Reveal] Spoiler: OA

Last edited by Bunuel on 06 Apr 2012, 12:20, edited 1 time in total.
Edited the question and added the OA
Math Expert
Joined: 02 Sep 2009
Posts: 25207
Followers: 3419

Kudos [?]: 25115 [2] , given: 2702

Re: percent word problem [#permalink]  06 Apr 2012, 12:19
2
KUDOS
Expert's post
1
This post was
BOOKMARKED
rovshan85 wrote:
Solution Y is 30% liquid X and 70 percent water. If 2 kilograms of water evaporate from 8 kg of solution Y and 2 kg of solution Y are added to the remaining 6 kg of liquid, what percent of this new solution is liquid X?

a. 30
b. 33 1/3
c. 37 1/2
d. 40
e. 50

What is the easiest way to approach this type of problem and solve under 2 min.

In 8 kilograms of solution Y there are 0.3*8=2.4 kilograms of solution X;

After 2 kilograms of water are replaced by 2 kilograms of solution Y, to the existing 2.4 kilograms of solution X, 0.3*2=0.6 kilograms of solution X are added, so in the new solution of 8 kilograms there are 2.4+0.6=3 kilograms of solution X, which is 3/8*100=37.5% of this new solution.

_________________
Manager
Joined: 28 Jul 2011
Posts: 213
Followers: 0

Kudos [?]: 27 [0], given: 13

Solution Y is 30 percent liquid X and 70 percent water. If 2 [#permalink]  02 Jun 2012, 08:51
Solution Y total = 8
Liq x = 30% (8) = 2.4

Added 2 kg of Solution Y
Liq x = 30% (2) = 0.6

Final Solution wil have = (2.4 + 0.6) = 3 kg of Liq x

3/8 = 37.5%
Math Expert
Joined: 02 Sep 2009
Posts: 25207
Followers: 3419

Kudos [?]: 25115 [0], given: 2702

Re: Solution Y is 30 percent liquid X and 70 percent water. If 2 [#permalink]  26 Aug 2013, 05:51
Expert's post
Bumping for review and further discussion.
_________________
Senior Manager
Joined: 17 Dec 2012
Posts: 394
Location: India
Followers: 12

Kudos [?]: 175 [0], given: 9

Re: Solution Y is 30 percent liquid X and 70 percent water. If 2 [#permalink]  26 Aug 2013, 20:32
rovshan85 wrote:
Solution Y is 30 percent liquid X and 70 percent water. If 2 kilograms of water evaporate from 8 kilograms of solution Y and 2 kilograms of solution Y are added to the remaining 6 kilograms of liquid, what percent of this new solution is liquid X?

A. 30%
B. 33 1/3%
C. 37 1/2%
D. 40%
E. 50%

What is the easiest way to approach this type of problem and solve under 2 min.

1. The net effect of 2 kg of water evaporating and adding 2 kg of the solution is removing (-2 + 1.4 = -0.6) 0.6 kg of water and adding 0.6 kg of liquid
2 Therefore the changed solution contains, 2.4 + 0.6 = 3 kg of liquid and 5.6-0.6==5 kg of water.
3. Percentage of liquid is 3/8 * 100 % = 37 1/2 %
_________________

Srinivasan Vaidyaraman
Sravna Test Prep
http://www.sravna.com/courses.php

Classroom Courses in Chennai
Online and Correspondence Courses

Re: Solution Y is 30 percent liquid X and 70 percent water. If 2   [#permalink] 26 Aug 2013, 20:32
Similar topics Replies Last post
Similar
Topics:
If 70 percent of 600 is 40 percent of x, then x=? 1 30 Apr 2012, 23:09
1 Solution Y is 30 percent liquid X and 70 percent water. If 2 4 11 Mar 2008, 18:05
Solution Y is 30 percent liquid X and 70 percent water. If 2 1 16 Nov 2007, 11:21
Solution Y is 30 percent liquid X and 70 percent water. If 2 2 29 Jan 2007, 09:51
Solution Y is 30% liquid X and 70% water. If 2 kliograms 3 22 Sep 2004, 05:37
Display posts from previous: Sort by