SOLUTION: How many gallons of a 25 percent saline solution and a 35 percent solution must be mixed together to get 220 Gallons of 30 percent saline solution. If you could send me the equati

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Question 995909: How many gallons of a 25 percent saline solution and a 35 percent solution must be mixed together to get 220 Gallons of 30 percent saline solution.
If you could send me the equation you plunged the info into as well it would be greatly appreciated. Thanks

Found 2 solutions by stanbon, ikleyn:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
How many gallons of a 25 percent saline solution and a 35 percent solution must be mixed together to get 220 Gallons of 30 percent saline solution.
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Equation:
salt + salt = salt
0.25x + 0.35(220-x) = 0.30*220
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25x + 35*220 - 35x = 30*220
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-10x = -5*220
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x = (1/2)220
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x = 110 Gallons (amt. of 25% solution needed)
220-x = 110 Gallons (amt. of 35% solution needed)
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Cheers,
Stan H.
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Answer by ikleyn(52777)   (Show Source): You can put this solution on YOUR website!
.
See also the lesson  Solving typical word problems on mixtures for solutions  in this site where the similar problem was solved.


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