document.write( "Question 153543: How many kilograms of water must be evaporated from 50 kg of a 10% salt solution to obtain a 15% salt solution? \n" ); document.write( "

Algebra.Com's Answer #113032 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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How many kilograms of water must be evaporated from 50 kg of a 10% salt solution to obtain a 15% salt solution?
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\n" ); document.write( "Let x = amt of water to be evaporated
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\n" ); document.write( "The amt of salt remains the same, only the per cent changes, as water is removed
\n" ); document.write( ".10(50) = .15(50-x)
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\n" ); document.write( "5 = 7.5 - .15x
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\n" ); document.write( "+.15x = 7.5 - 5
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\n" ); document.write( ".15x = 2.5
\n" ); document.write( "x = $\"2.5%2F.15\"$
\n" ); document.write( "x = 16 $\"2%2F3\"$ kg to be evaporated
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\n" ); document.write( "Check soluton
\n" ); document.write( ".1(50) = .15(50-16.67)
\n" ); document.write( "5 = .15(33.33)
\n" ); document.write( "5 = 4.9995 ~ 5 \n" ); document.write( "

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