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A lab technician needs a 40% solution of a certain chemical
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10 Jul 2019, 05:53
10 Jul 2019, 05:53
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Question Stats:
73% (01:15) correct
26% (02:04) wrong based on 56 sessions
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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
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10 Jul 2019, 06:55
10 Jul 2019, 06:55
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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
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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).
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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.
