document.write( "Question 428740: How many gallons of cream that is 23% butterfat and milk that is 3% butterfat must a dairy farmer mix to make a 30 gallon mixture of milk that is 4% butterfat? \n" ); document.write( "
Algebra.Com's Answer #297942 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How many gallons of cream that is 23% butterfat and milk that is 3% butterfat must a dairy farmer mix to make a 30 gallon mixture of milk that is 4% butterfat? \n" ); document.write( "-------------------- \n" ); document.write( "Equation: \n" ); document.write( "fat + fat = fat \n" ); document.write( "0.23x + 0.03(30-x) = 0.04*30 \n" ); document.write( "---- \n" ); document.write( "Multiply thru by 100 to get: \n" ); document.write( "23x + 3*30-3x = 4*30 \n" ); document.write( "20x = 30 \n" ); document.write( "x = 3/2 gallons (amt. of 23% cream needed) \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================= \n" ); document.write( " |