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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

How many liters of a solution that is 15% salt must be added [#permalink]

Show Tags

09 Oct 2006, 17:55

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

How many liters of a solution that is 15% salt must be added to 5 liters of a solution that is 8% salt so that the resulting solution is 10% salt?

Solution:
Let n represent the number of liters of the 15% solution. The amount of salt in the 15% solution [0.15n] plus the amount of salt in the 8% solution [(0.08)(5)] must be equal to the amount of salt in the 10% mixture [0.10 (n + 5)].

.15n + .08(5) = .10(n+5)

Answer: n = 2

Can someone help me understand the .10(n+5) part? Any help is appreciated.

based on Cicerone's technique..wouldn't the following solution be 2?.. I got this question from an earlier post, and apparently the OA is D? Can someone explain?

How many gallons of water must be mixed with 1 gallon of a 15% salt soltion to obtain a 10% salt solution?
A)0.5
B)0.67
C)1.0
D)1.5
E) 2.0

based on Cicerone's technique..wouldn't the following solution be 2?.. I got this question from an earlier post, and apparently the OA is D? Can someone explain?

How many gallons of water must be mixed with 1 gallon of a 15% salt soltion to obtain a 10% salt solution? A)0.5 B)0.67 C)1.0 D)1.5 E) 2.0

hey, the answer will be o.5. I guess u made a silly mistake.......
Look at this