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
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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! \n" );
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Algebra.Com's Answer #415736 by stanbon(75887)![]() ![]() ![]() 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? \n" ); document.write( "----- \n" ); document.write( "Quantity Equation: x + 40 = y \n" ); document.write( "Ingrediant Eq::: 0.20x + 0.80*40 = 0.50y \n" ); document.write( "---------------------------------------------- \n" ); document.write( "Rearrange and multiply the 1st equation by 20 \n" ); document.write( "Rearrange and multiply the 2nd equation by 100 \n" ); document.write( "---------------------------------------------- \n" ); document.write( "20x - 20y = -800 \n" ); document.write( "20x - 50y = -3200 \n" ); document.write( "------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |