document.write( "Question 668647: How many liters (L) of a 20% solution must be mixed with 40 L of a 80% solution to get a 50% solution?\r
\n" ); document.write( "\n" ); document.write( "My teacher wants us to make 2 equations. We solve them by plugging them into the calculator. I just need to know how to get 2 equations out of this. Thank you so much!
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Algebra.Com's Answer #415736 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
How many liters (L) of a 20% solution must be mixed with 40 L of a 80% solution to get a 50% solution?
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\n" ); document.write( "Quantity Equation: x + 40 = y
\n" ); document.write( "Ingrediant Eq::: 0.20x + 0.80*40 = 0.50y
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\n" ); document.write( "Rearrange and multiply the 1st equation by 20
\n" ); document.write( "Rearrange and multiply the 2nd equation by 100
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\n" ); document.write( "20x - 20y = -800
\n" ); document.write( "20x - 50y = -3200
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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