document.write( "Question 928659: mix a solution that is 50% acid with a solution that is 100% water to make 4L of a solution that is 10% acid. How much of each solution should you use? \n" ); document.write( "
Algebra.Com's Answer #563848 by TimothyLamb(4379)\"\" \"About 
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x = liters of 50% acid = liters of 50% water
\n" ); document.write( "y = liters of pure water
\n" ); document.write( "z = liters of 10% acid = liters of 90% water = 4
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\n" ); document.write( "x + y = 4
\n" ); document.write( "50x + 100y = 90(x + y)
\n" ); document.write( "50x + 100y = 90*4
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\n" ); document.write( "put the system of linear equations into standard form
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\n" ); document.write( "x + y = 4
\n" ); document.write( "50x + 100y = 360
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\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
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\n" ); document.write( "answer:
\n" ); document.write( "x = liters of 50% acid = 0.8
\n" ); document.write( "y = liters of pure water = 3.2
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\n" ); document.write( "Solve and graph linear equations:
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
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