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
\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.
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Algebra.Com's Answer #331701 by htmentor(1343)\"\" \"About 
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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.
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\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
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