document.write( "Question 484827: A cook used all of a 2-pound chunk of cheese in making three recipes. Recipe I used one-third as much cheese as Recipe II did, and Recipe II used one-half as much cheese as Recipe III.\r
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document.write( "a. What part of the whole chunk of cheese, and how many pounds, did each recipe use?\r
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document.write( "b. If the whole chunk of cheese cost $6.60, how much was the cheese in each recipe worth. \n" );
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Algebra.Com's Answer #331701 by htmentor(1343)![]() ![]() You can put this solution on YOUR website! A cook used all of a 2-pound chunk of cheese in making three recipes. Recipe I used one-third as much cheese as Recipe II did, and Recipe II used one-half as much cheese as Recipe III.\r \n" ); document.write( "\n" ); document.write( "a. What part of the whole chunk of cheese, and how many pounds, did each recipe use?\r \n" ); document.write( "\n" ); document.write( "b. If the whole chunk of cheese cost $6.60, how much was the cheese in each recipe worth. \n" ); document.write( "======================================= \n" ); document.write( "a. \n" ); document.write( "Let a = the amount of cheese in recipe I. \n" ); document.write( "Let b = the amount in recipe II. \n" ); document.write( "Then the amount in recipe III = 2 - a - b \n" ); document.write( "Given: \n" ); document.write( "I used 1/3 as much as II. \n" ); document.write( "a = b/3 [1] \n" ); document.write( "II used one-half as much as III. \n" ); document.write( "b = 1/2(2 - a - b) [2] \n" ); document.write( "Use the value for a in [1] into [2]: \n" ); document.write( "b = 1/2(2 - b/3 - b) \n" ); document.write( "b = 1 - b/6 - b/2 \n" ); document.write( "b = 1 - b/6 - 3b/6 \n" ); document.write( "10b/6 = 1 \n" ); document.write( "b = 6/10 = 3/5 \n" ); document.write( "Therefore a = 3/15 = 1/5 \n" ); document.write( "and recipe III contains 2 - 1/5 - 3/5 = 6/5 \n" ); document.write( "So the amounts are 1/5, 3/5 and 6/5 pounds for recipe I, II and III resp. \n" ); document.write( "b. \n" ); document.write( "The cheese costs $6.60/2 lbs = $3.30 per pound \n" ); document.write( "I: 1/5lb*3.30 = $0.66 \n" ); document.write( "II: 3/5lb*3.30 = $1.98 \n" ); document.write( "III: 6/5lb*6.60 = $3.96 \n" ); document.write( " |