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:

John needs to mix a solution in the following ratio: 1 part [#permalink]

Show Tags

29 Dec 2012, 12:23

6

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

15% (low)

Question Stats:

77% (02:13) correct
23% (01:17) wrong based on 196 sessions

HideShow timer Statistics

John needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, John makes a mistake and mixes in half as much bleach as he ought to have. The total solution consists of 27 mL. How much bleach did John put into the solution?

Re: John needs to mix a solution in the following ratio: 1 part [#permalink]

Show Tags

30 Dec 2012, 03:44

1

This post was BOOKMARKED

megafan wrote:

John needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, John makes a mistake and mixes in half as much bleach as he ought to have. The total solution consists of 27 mL. How much bleach did John put into the solution?

(A) 9 mL (B) 6 mL (C) 5 mL (D) 3 mL (E) 1.5 mL

Bleach:Water :: 1:4

So in terms of x, let B=2x, W=8x since actual bleach was just half B=x and so B+W = 27 => 9x= 27 an x = 3

John needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, John makes a mistake and mixes in half as much bleach as he ought to have. The total solution consists of 27 mL. How much bleach did John put into the solution?

(A) 9 mL (B) 6 mL (C) 5 mL (D) 3 mL (E) 1.5 mL

Usual ratio = Bleach : Water = 1:4 = 2:8 = 2x:8x.

Mistake ratio = x:8x. Since the total solution consists of 27 mL, then x+8x=27 --> x=3.

Alexandra needs to mix cleaning solution in the following ratio [#permalink]

Show Tags

19 Sep 2015, 23:49

Alexandra needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, Alexandra makes a mistake and mixes in half as much bleach as she ought to have. The total solution consists of 27 mL. How much bleach did Alexandra put into the solution?

A) 1.5 B) 3 C) 4.5 D) 5 E) 6

Last edited by Engr2012 on 20 Sep 2015, 04:39, edited 1 time in total.

Re: Alexandra needs to mix cleaning solution in the following ratio [#permalink]

Show Tags

19 Sep 2015, 23:52

jaspreets wrote:

Alexandra needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, Alexandra makes a mistake and mixes in half as much bleach as she ought to have. The total solution consists of 27 mL. How much bleach did Alexandra put into the solution?

1)1.5 2)3 3)4.5 4)5 5)6

Could some please explain why answer is 3. Thank you.

Re: Alexandra needs to mix cleaning solution in the following ratio [#permalink]

Show Tags

20 Sep 2015, 02:56

jaspreets wrote:

jaspreets wrote:

Alexandra needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, Alexandra makes a mistake and mixes in half as much bleach as she ought to have. The total solution consists of 27 mL. How much bleach did Alexandra put into the solution?

1)1.5 2)3 3)4.5 4)5 5)6

Could some please explain why answer is 3. Thank you.

New ratio will become 1:8 (1:4 = 2:8; half of the bleach = 1:8) --> 1/9 of 27 = 3

Alexandra needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, Alexandra makes a mistake and mixes in half as much bleach as she ought to have. The total solution consists of 27 mL. How much bleach did Alexandra put into the solution?

1)1.5 2)3 3)4.5 4)5 5)6

Could some please explain why answer is 3. Thank you.

hi the ratio is 1:4.. but only half of sol is put... so the actual ratio is 1/2:4 or 1:8.. so the quantity =1/9 * 27 =3 B
_________________

Alexandra needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, Alexandra makes a mistake and mixes in half as much bleach as she ought to have. The total solution consists of 27 mL. How much bleach did Alexandra put into the solution?

1)1.5 2)3 3)4.5 4)5 5)6

Could some please explain why answer is 3. Thank you.

Alexandra needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, Alexandra makes a mistake and mixes in half as much bleach as she ought to have. The total solution consists of 27 mL. How much bleach did Alexandra put into the solution?

A) 1.5 B) 3 C) 4.5 D) 5 E) 6

Ratio needed is 1:4 But only half of the solution is mixed, hence actual ratio = (1/2):4 = 1:8

This means that the solution has total 9 parts, out of which I part if the bleach

Hence the quantity will be =1/9 * 27 =3. Option B
_________________

Re: John needs to mix a solution in the following ratio: 1 part [#permalink]

Show Tags

28 Sep 2016, 05:03

Hello from the GMAT Club BumpBot!

Thanks to another GMAT 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.
_________________

Happy New Year everyone! Before I get started on this post, and well, restarted on this blog in general, I wanted to mention something. For the past several months...

It’s quickly approaching two years since I last wrote anything on this blog. A lot has happened since then. When I last posted, I had just gotten back from...

Happy 2017! Here is another update, 7 months later. With this pace I might add only one more post before the end of the GSB! However, I promised that...

The words of John O’Donohue ring in my head every time I reflect on the transformative, euphoric, life-changing, demanding, emotional, and great year that 2016 was! The fourth to...