document.write( "Question 180186: Two metal alloys, one containing 26% copper and the other containing 54%copper are to be mixed together to get 210 oz of an alloy that is 30% copper. How much of the alloy containing 26% copper should be used? \n" ); document.write( "
Algebra.Com's Answer #135032 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Two metal alloys, one containing 26% copper and the other containing 54%copper are to be mixed together to get 210 oz of an alloy that is 30% copper. How much of the alloy containing 26% copper should be used? \n" ); document.write( "---------------------------------- \n" ); document.write( "Equation: \n" ); document.write( "copper + copper = copper \n" ); document.write( "0.26x + 0.54(210-x) = 0.30*210\r \n" ); document.write( "\n" ); document.write( "Multiply thru by 100 to get: \n" ); document.write( "26x + 54*210 - 54x = 30*240\r \n" ); document.write( "\n" ); document.write( "-28x = - 14*240\r \n" ); document.write( "\n" ); document.write( "x = 120 oz (amt. of 26% alloy in the mixure) \n" ); document.write( "================================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |