document.write( "Question 430619: How much pure gold should be melted into 5 grams of a 62% gold alloy to make it an 85% gold alloy? \n" ); document.write( "
Algebra.Com's Answer #299029 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How much pure gold should be melted into 5 grams of a 62% gold alloy to make it an 85% gold alloy? \n" ); document.write( "------ \n" ); document.write( "Equation: \n" ); document.write( "gold + gold = gold \n" ); document.write( "0.62*5 + 1.00x = 0.85*(5+x) \n" ); document.write( "Multiply thru by 100: \n" ); document.write( "62*5 + 100x = 85*5+85x \n" ); document.write( "15x = 23*5 \n" ); document.write( "x = (1/3)23 \n" ); document.write( "x = 7 2/3 oz (amt. of pure gold needed) \n" ); document.write( "=========================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |