document.write( "Question 693828: how many liters of water must be added to 10 liters of a 95% acid solution to make an 80% acid solution? \n" ); document.write( "
Algebra.Com's Answer #427565 by ptaylor(2198)![]() ![]() You can put this solution on YOUR website! Let x=amount of water that must be added \n" ); document.write( "Now we know that the amount of pure acid before the water is added (0.95*10) has to equal the amount of pure acid after the water is added(0.80(10+x)). Sooooo \n" ); document.write( "0.80(10+x)=0.95*10 \n" ); document.write( "8+0.80x=9.5 \n" ); document.write( "0.80x=1.5 \n" ); document.write( "x=1.875 liters=1 7/8 liter---amount of water that needs to be added\r \n" ); document.write( "\n" ); document.write( "Check \n" ); document.write( "0.95*10=0.80*11.875 \n" ); document.write( "9.5=9.5\r \n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor \n" ); document.write( " |