document.write( "Question 1053212: how many ounces of a 2% cleaning solution should be mixed with a 5% cleaning solution to obtain 20 ounces of a 3.8% cleaning solution? \n" ); document.write( "
Algebra.Com's Answer #668475 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Same problem, different numbers. \n" ); document.write( "--- \n" ); document.write( " A dairy needs 235 gallons of milk containing 5% butterfat. How many gallons each of milk containing 7% butterfat and milk containing 2% butterfat must be used to obtain the desired 235 gallons? \n" ); document.write( "--------------------------- \n" ); document.write( " Let n be the amount of 7% butterfat milk. Then: \n" ); document.write( " .07n+.02(235-n)=.05(235) \n" ); document.write( " 7n+2(235-n)=5(235) \n" ); document.write( " 5n+470=1175 \n" ); document.write( " 5n=705 \n" ); document.write( " n=141 \n" ); document.write( " The dairy needs 141 gallons of 7% butterfat milk, and 94 gallons of 2% butterfat milk for its desired mixture. \n" ); document.write( " |