GRE Prep 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.
Solution X is 10 percent alcohol by volume, and solution Y
[#permalink]
26 Oct 2017, 02:33
26 Oct 2017, 02:33
2
2
Bookmarks
00:00
Question Stats:
84% (23:00) correct
15% (03:47) wrong based on 38 sessions
Hide Show timer Statistics
Solution X is 10 percent alcohol by volume, and solution Y is 30 percent alcohol by volume. How many milliliters of solution Y must be added to 200 milliliters of solution X to create a solution that is 25 percent alcohol by volume?
A. 250/3
B. 500/3
C. 400
D. 480
E. 600
Kudos for correct solution.
A. 250/3
B. 500/3
C. 400
D. 480
E. 600
Kudos for correct solution.
Re: Solution X is 10 percent alcohol by volume, and solution Y
[#permalink]
26 Oct 2017, 04:44
26 Oct 2017, 04:44
2
The problem can be solved using the formula for the weighted average as \(\frac{200*0.10+x*0.3}{200+x} = 0.25\), where x is the amount of solution Y needed to reach a 25% concentration in the mix. Solving, we get x = 600 thus answer E
Re: Solution X is 10 percent alcohol by volume, and solution Y
[#permalink]
04 Feb 2023, 05:56
04 Feb 2023, 05:56
Hello from the GRE Prep Club BumpBot!
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
