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.
A lab technician needs a 40% solution of a certain chemical
[#permalink]
10 Jul 2019, 05:53
10 Jul 2019, 05:53
1
4
Bookmarks
00:00
Question Stats:
73% (01:16) correct
26% (02:02) wrong based on 61 sessions
Hide Show timer Statistics
A lab technician needs a 40% solution of a certain chemical for an experiment, but the lab that she works in only has a 20% solution and a 50% solution in stock. In what ratio should she mix the 20% solution with the 50% solution in order to obtain the 40% solution that she needs?
1:3
1:2
2:3
2:1
3:1
1:3
1:2
2:3
2:1
3:1
Re: A lab technician needs a 40% solution of a certain chemical
[#permalink]
10 Jul 2019, 06:55
10 Jul 2019, 06:55
5
arpitjain wrote:
A lab technician needs a 40% solution of a certain chemical for an experiment, but the lab that she works in only has a 20% solution and a 50% solution in stock. In what ratio should she mix the 20% solution with the 50% solution in order to obtain the 40% solution that she needs?
1:3
1:2
2:3
2:1
3:1
1:3
1:2
2:3
2:1
3:1
Let the total 20% solution be = X
and total 50% solution be = Y
As per ques;
\(0.2x +0.5y = 0.4 (x +y)\)
or \(0.2x = 0.1y\)
or \(\frac{x}{y}= \frac{1}{2}\)
General Discussion
Re: A lab technician needs a 40% solution of a certain chemical
[#permalink]
17 Jun 2024, 16:34
17 Jun 2024, 16:34
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.
