document.write( "Question 1003650: How much water must be mixed with 4 pints of a solution that is 90% developer to product a mixture that is 21% developer?
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\n" ); document.write( "13 1/7 pt
\n" ); document.write( "13 1/3 pt
\n" ); document.write( "16 20/21 pt
\n" ); document.write( "17 1/7 pt \n" ); document.write( "

Algebra.Com's Answer #620316 by stanbon(75887) $\"\"$ $\"About$

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How much water must be mixed with 4 pints of a solution that is 90% developer to product a mixture that is 21% developer?
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\n" ); document.write( "Equation:
\n" ); document.write( "active + active = active
\n" ); document.write( "0.90*4 + 0*x = 0.21(4+x)
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\n" ); document.write( "90*4 + 0 = 21*4 + 21x
\n" ); document.write( "21x = 69*4
\n" ); document.write( "x = 13.1429 pints (amt. of water to add)
\n" ); document.write( "x = 13 1/7 pts
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\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Options
\n" ); document.write( "13 1/7 pt
\n" ); document.write( "13 1/3 pt
\n" ); document.write( "16 20/21 pt
\n" ); document.write( "17 1/7 pt \n" ); document.write( "

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