document.write( "Question 695012: Alan bought $20.40 worth of cheese and butter. A pound of cheese cost $2.40 and a pound of butter cost $3.20 The cheese and butter together weighed 7.5 pounds. How many pounds of each did he buy? \n" ); document.write( "
Algebra.Com's Answer #804518 by CubeyThePenguin(3113)\"\" \"About 
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c = pounds of cheese
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\n" ); document.write( "\n" ); document.write( "c + b = 7.5
\n" ); document.write( "2.4c + 3.2b = 20.40\r
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\n" ); document.write( "\n" ); document.write( "Multiply the first equation by 3.2.\r
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\n" ); document.write( "\n" ); document.write( "3.2c + 3.2b = 24
\n" ); document.write( "2.4c + 3.2b = 20.40\r
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\n" ); document.write( "\n" ); document.write( "So, 0.8c = 3.6 --> c = 4.5.\r
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\n" ); document.write( "\n" ); document.write( "Alan bought 4.5 pounds of cheese and 3 pounds of butter.
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