document.write( "Question 984585: An explosive specialist must make a solution that is 21% Nitro glycerine. He has 7 ml of a 15% solution. How many ml of a 24% solution must he mix with all of the 15% solution to get the desired 21% solution? \n" ); document.write( "
Algebra.Com's Answer #605455 by ankor@dixie-net.com(22740)\"\" \"About 
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An explosive specialist must make a solution that is 21% Nitro glycerine.
\n" ); document.write( " He has 7 ml of a 15% solution.
\n" ); document.write( " How many ml of a 24% solution must he mix with all of the 15% solution to get the desired 21% solution?
\n" ); document.write( ":
\n" ); document.write( "let x = amt of 24% solution required
\n" ); document.write( ":
\n" ); document.write( "write an equation that is the decimal equiv of the percent nitro
\n" ); document.write( ".15(7) + .24x = .21(x+7)
\n" ); document.write( "1.05 + .24x = .21x + 1.47
\n" ); document.write( ".24x - .21x = 1.47 - 1.05
\n" ); document.write( ".03x = .42
\n" ); document.write( "x = .42/.03
\n" ); document.write( "x = 14 ml of 24% solution required
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