document.write( "Question 1155750: A sparkling-water distributor wants to make up 400 gal of sparkling water to sell for $ 8.00 per gallon. She wishes to mix three grades of water selling for $14.00, $3.00, and $4.50 per gallon, respectively. She must use twice as much of the $4.50 water as the $ 3.00 comma water. How many gallons of each should she use? \n" ); document.write( "
Algebra.Com's Answer #778408 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! Let \n" ); document.write( "Let \n" ); document.write( "Let \n" ); document.write( "------------------------------------------- \n" ); document.write( "(1) \n" ); document.write( "(2) \n" ); document.write( "(3) \n" ); document.write( "---------------------- \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "Multiply both sides of (1) by \n" ); document.write( "(2) \n" ); document.write( "(1) \n" ); document.write( "------------------------------------ \n" ); document.write( "(4) \n" ); document.write( "Plug (3) into (1) \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "Subtract (1) from (4) \n" ); document.write( "(4) \n" ); document.write( "(1) \n" ); document.write( "------------------------------ \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "and \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "Plug (3) into (1) \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "and \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "------------------------------ \n" ); document.write( "160 gallons of $14 water \n" ); document.write( "80 gallons of $3 water \n" ); document.write( "160 gallons of $4.50 water \n" ); document.write( "------------------------------- \n" ); document.write( "check: \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "OK \n" ); document.write( "check the math & get a 2nd opinion if needed\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |