Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

It is currently 29 Apr 2017, 00:24

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

How many gallons of water must be mixed with 1 gallon of a 15% salt so

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Intern
Intern
avatar
Joined: 19 Dec 2009
Posts: 33
Followers: 0

Kudos [?]: 67 [0], given: 9

How many gallons of water must be mixed with 1 gallon of a 15% salt so [#permalink]

Show Tags

New post 15 Oct 2010, 10:20
2
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

57% (02:25) correct 43% (01:07) wrong based on 60 sessions

HideShow timer Statistics

How many gallons of water must be mixed with 1 gallon of a 15% salt solution to obtain a 10% salt solution?

A. 0.50
B. 0.67
C. 1.00
D. 1.50
E. 2.00
[Reveal] Spoiler: OA
2 KUDOS received
Manager
Manager
User avatar
Joined: 08 Sep 2010
Posts: 230
Location: India
WE 1: 6 Year, Telecom(GSM)
Followers: 4

Kudos [?]: 272 [2] , given: 21

Re: How many gallons of water must be mixed with 1 gallon of a 15% salt so [#permalink]

Show Tags

New post 15 Oct 2010, 22:56
2
This post received
KUDOS
rtaha2412 wrote:
Does anyone have a good strategy to solving solutions problems?

Question

How many gallons of water must be mixed with 1 gallon of a 15% salt solution to obtain a 10% salt solution?

A 0.50
b 0.67
c 1.00
d 1.50
e. 2.00


you are having 1 gallon of a 15% salt solution means you are having (15/100)*1 gallon of salt.

Now consider you are using x gallons of water and making it to (x+1) gallon of solution.now the salt content(15/100) will be the 10% of total solution.
Hence (10/100)(x+1)=15/100

Solving we get x=0.5 gallon.Answer is A.

Consider KUDOS if it is helpful to u.Thanks.
Expert Post
Math Expert
User avatar
P
Joined: 02 Sep 2009
Posts: 38297
Followers: 7577

Kudos [?]: 103272 [0], given: 11369

Re: How many gallons of water must be mixed with 1 gallon of a 15% salt so [#permalink]

Show Tags

New post 29 Nov 2016, 07:16
rtaha2412 wrote:
How many gallons of water must be mixed with 1 gallon of a 15% salt solution to obtain a 10% salt solution?

A. 0.50
B. 0.67
C. 1.00
D. 1.50
E. 2.00


Since we are adding pure water then the amount of salt in both solutions will be the same, so 0.15*1=0.1*(1+x) --> x=0.5.

Answer: A.
_________________

New to the Math Forum?
Please read this: All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Re: How many gallons of water must be mixed with 1 gallon of a 15% salt so   [#permalink] 29 Nov 2016, 07:16
    Similar topics Author Replies Last post
Similar
Topics:
8 Experts publish their posts in the topic How many gallons of yellow paint must be added to a 20 gallons of gree Bunuel 1 03 Feb 2017, 09:30
5 Experts publish their posts in the topic How many gallons of a 7% saline solution must be added to 4 gallons of Bunuel 2 25 Jan 2017, 10:02
5 Experts publish their posts in the topic A 48 gallon solution of salt and water is 10% salt. How many gallons Bunuel 6 13 Jun 2016, 11:08
18 Experts publish their posts in the topic How many pounds of salt at 50 cents/lb must be mixed SOURH7WK 12 17 Nov 2016, 13:20
3 Experts publish their posts in the topic How many gallons of water must be mixed with 1 gallon of a jsphcal 6 29 Dec 2015, 09:32
Display posts from previous: Sort by

How many gallons of water must be mixed with 1 gallon of a 15% salt so

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.