document.write( "Question 505669: Pure acid is to be added to a 5% acid solution to obtain 95L of 30% solution. What amounts of each should be used?
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document.write( " How many Liters of 100% acid should be used to obtain the solution? \n" );
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Algebra.Com's Answer #339928 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Pure acid is to be added to a 5% acid solution to obtain 95L of 30% solution. What amounts of each should be used? \n" ); document.write( "---- \n" ); document.write( "Equation: \n" ); document.write( "acid + acid = acid \n" ); document.write( "0.05x + 1.0(95-x) = 0.30*95 \n" ); document.write( "---- \n" ); document.write( "Multiply thr by 100 to get: \n" ); document.write( "5x + 100*95 - 100x = 30*95 \n" ); document.write( "--- \n" ); document.write( "-95x = -70*95 \n" ); document.write( "--- \n" ); document.write( "x = 70L (amt of 5% solution needed) \n" ); document.write( "--- \n" ); document.write( "95-x = 25L (amt of 100% solution needed) \n" ); document.write( "================================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "How many Liters of 100% acid should be used to obtain the solution? \n" ); document.write( "--------------------- \n" ); document.write( " |