document.write( "Question 822187: how many gallons of a 60% solution must be mixed with 15 gallons of 10% solution to obtain a 20% solution? \n" ); document.write( "
Algebra.Com's Answer #494652 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" );
document.write( "Hi,
\n" );
document.write( "how many gallons\"highlight_green%28x%29\" of a 60% solution must be mixed with 15 gallons of 10% solution 
\n" );
document.write( "to obtain a 20% solution?
\n" );
document.write( "  .60x + .10*15 = .20(15+x) ***   |Multiplying thru by 100
\n" );
document.write( "   60x + 150 = 20(15+x)    |Solve for x
\n" );
document.write( "      40x = 150
\n" );
document.write( "        x = 15/4gallons  0r  33⁄4 gal
\n" );
document.write( " CHECKING our answer***
\n" );
document.write( "   2.25 + 1.5 = 3.75  \n" );
document.write( "
\n" );