document.write( "Question 163193: Michael has 1 liter of a mixture containing 69% of boric acid. How much water must be added to make the mixture 50% boric acid? (Represent answer as a fraction) \n" ); document.write( "

Algebra.Com's Answer #120252 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Michael has 1 liter of a mixture containing 69% of boric acid. How much water must be added to make the mixture 50% boric acid?
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\n" ); document.write( "Let x = amt of water required
\n" ); document.write( "then
\n" ); document.write( "(x+1) = the amt of the resulting mixture
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\n" ); document.write( "Amt of boric acid equation:
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\n" ); document.write( ".69(1) = .50(x+1)
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\n" ); document.write( ".69 = .5x + .50
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\n" ); document.write( ".69-.50 = .5x
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\n" ); document.write( ".5x = .19
\n" ); document.write( "x = $\".19%2F.5\"$
\n" ); document.write( "x = .38 liters of water required
\n" ); document.write( "In a fraction: $\"38%2F100\"$ = $\"19%2F50\"$ liter
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\n" ); document.write( "Check solution
\n" ); document.write( ".69(1) = .50(1.38)
\n" ); document.write( ".69 = .69
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