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Mixture Problems Made Easy

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Manager
Joined: 26 Feb 2015
Posts: 124

Kudos [?]: 30 [1], given: 43

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05 May 2015, 06:28
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anik89 wrote:
KillerSquirrel wrote:
Mixture problems made Easy

solving mixture problems fast ! - (30 day money back guarantee )

see attachment

Thanks

i did not understand even a single strategy .. would you please simplify any one of them with the image structure??

I'll break down the first question for you.

My personal opinion is that a time line is easier than 4 arrows, but that's just a preference.

(1) Consider a straight line (see image below)

(2) Put the respective ratios on each side of the spectrum

(3) Put 45% between "30" and "50" (the goal of the solution is to mix 30% and 50% and get 45%, right?)

So, 45 is somewhere between 30 and 50. How far is 45 from 30? 15 "steps"

How far is 45 from 50? 5 "steps"

Now, to find the ratio, you simply flip the respective number. 15:5 becomes: 5:15 or simplified to 1:3. So, you use 1 "part" of 30% and 3 "parts" of 45.

Hope this explaination helps

Kudos [?]: 30 [1], given: 43

Intern
Joined: 17 Oct 2014
Posts: 3

Kudos [?]: 6 [0], given: 6

WE: Design (Manufacturing)

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26 Sep 2015, 11:47
tkp wrote:
gr8 post!

but can anyone show me how to solve this problem , with the method given here

Question: 10kg of a mixture contains 30% sand and 70% clay. In order to make the mixture contain equal quantities of clay and sand. how much of the mixture is to be removed and replaced with pure sand?

Below is the solution
Attachments

Sand - Clay.docx [25.05 KiB]

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Intern
Joined: 12 Oct 2015
Posts: 1

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12 Oct 2015, 04:18
Sir doc not open.
Kindly help me

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Math Expert
Joined: 02 Sep 2009
Posts: 43336

Kudos [?]: 139511 [0], given: 12794

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12 Oct 2015, 04:31
kumar2703 wrote:
Sir doc not open.
Kindly help me

Can you please try again. Just downloaded and opened without any problem.
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20 Oct 2016, 08:35
Hello from the GMAT Club BumpBot!

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30 Oct 2017, 05:54
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).

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Re: Mixture Problems Made Easy   [#permalink] 30 Oct 2017, 05:54

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