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 August 8th, 2008, 06:02 AM #1 Newbie   Joined: Aug 2008 Posts: 15 Thanks: 0 solution mixture word problem Ho much water must be evaporated from 120 pounds of solution which is 3% salt to make a solution of 5% salt? I did it exactly the same way it is shown in this link http://www.onlinemathlearning.com/mixtu ... tml#remove (since it's the same problem with different numbers) but I keep getting 40 for the answer instead of the correct answer which is 48, I don't know what am I doing wrong?, please help, thanks this is the equation I used: .97(120)-x = .95(120-x) x=40
 August 9th, 2008, 07:41 AM #2 Newbie   Joined: Aug 2008 Posts: 15 Thanks: 0 Re: solution mixture word problem Can any one please help me with this problem, I am really lost...thak you
August 9th, 2008, 01:22 PM   #3
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Re: solution mixture word problem

Quote:
 Originally Posted by sony102 Ho much water must be evaporated from 120 pounds of solution which is 3% salt to make a solution of 5% salt? I did it exactly the same way it is shown in this link http://www.onlinemathlearning.com/mixtu ... tml#remove (since it's the same problem with different numbers) but I keep getting 40 for the answer instead of the correct answer which is 48, I don't know what am I doing wrong?, please help, thanks this is the equation I used: .97(120)-x = .95(120-x) x=40

The next equation I get is: .02(120)=.05x
Therefore x = (2/5)120=48

August 10th, 2008, 10:15 AM   #4
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Re: solution mixture word problem

A picture is worth....

[attachment=0:282xbv1d]Salt.jpg[/attachment:282xbv1d]

3.6/(120-w) = 5/100

w = 48
Attached Images
 Salt.jpg (14.8 KB, 626 views)

 August 14th, 2008, 09:21 AM #5 Newbie   Joined: Aug 2008 Posts: 15 Thanks: 0 Re: solution mixture word problem thank you both that made it very clear

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