document.write( "Question 243097: Cooking polenta requires 2 cups of water for every ½ cup of polenta. How many cups of
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document.write( "water will be required for ¾ cups of polenta? \n" );
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Algebra.Com's Answer #178127 by oberobic(2304) ![]() You can put this solution on YOUR website! You can use the method of 'like ratios'. We are told that the ratio of water to polenta is 2 to 1/2, which can be shown as: 2/.5\r \n" ); document.write( "\n" ); document.write( "We are told that we're interested in how much for 3/4 c. of polenta. So that ratio will be x/.75.\r \n" ); document.write( "\n" ); document.write( "The ratios have to be equal, so we need to solve: \n" ); document.write( "2/.5 = x/.75\r \n" ); document.write( "\n" ); document.write( "Cross multiplying, we arrive at \n" ); document.write( "2(.75) = x(.5) \n" ); document.write( "1.5 = .5x \n" ); document.write( "Dividing by .5 \n" ); document.write( "1.5/.5 = x \n" ); document.write( "x = 1.5/.5 \n" ); document.write( "x = 3 \n" ); document.write( " |