document.write( "Question 626541: To the nearest mL, how much 0.3% ampicillin in solution do you have to add to 40mL of 0.8% ampicillin in solution to have 0.4 mL ampicillin total? \n" ); document.write( "

Algebra.Com's Answer #394274 by lwsshak3(11628) $\"\"$ $\"About$

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To the nearest mL, how much 0.3% ampicillin in solution do you have to add to 40mL of 0.8% ampicillin in solution to have 0.4% mL ampicillin total?
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\n" ); document.write( "let x=amt of .3% ampicillan to add
\n" ); document.write( ".3%x+.8%*40=.4%(40+x)
\n" ); document.write( ".003x+.32=.16+.004x
\n" ); document.write( ".001x=.16
\n" ); document.write( "x=.16/.001
\n" ); document.write( "x=160
\n" ); document.write( "amt of .3% ampicillan to add=160 ml \n" ); document.write( "

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