document.write( "Question 1014332: Shelly is shopping for laundry detergent,mustard,and canned tuna.She is trying to decide which of two products is the better buy. Using the following information, can you help Shelly?
\n" ); document.write( "Laundry detergent A $2.00 for 37 ounces
\n" ); document.write( "Laundry detergent B $2.37 for 38 ounces
\n" ); document.write( "Mustard A $.88 for 6 ounces
\n" ); document.write( "Mustard B $1.61 for 12 1/2 ounces
\n" ); document.write( "Canned tuna A $1.09 for 6 ounces
\n" ); document.write( "Canned tuna B $1.29 for 8 3/4 ounces
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Algebra.Com's Answer #630627 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
the most straight forward way is to find the cost per ounce.\r
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\n" ); document.write( "\n" ); document.write( "detergent:
\n" ); document.write( "2.00 / 37 = .054...
\n" ); document.write( "2.37 / 38 = .062...
\n" ); document.write( "laundry detergent A is cheaper.\r
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\n" ); document.write( "\n" ); document.write( "mustard:
\n" ); document.write( ".88 / 6 = .146...
\n" ); document.write( "1.61 / 12.5 = .1288...
\n" ); document.write( "mustard B is cheaper\r
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\n" ); document.write( "\n" ); document.write( "canned tuna:
\n" ); document.write( "1.09/6 = .1816...
\n" ); document.write( "1.29/8.75 = .147...
\n" ); document.write( "canned tuna B is cheaper.\r
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\n" ); document.write( "\n" ); document.write( "another way is to do a ratio analysis.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "detergent:
\n" ); document.write( "if 37 ounces of detergent A costs 2.00, then 38 ounces of detergent A would cost 38/37 * 2.00 = 2.05...
\n" ); document.write( "since 38 ounces of detergent B cost 2.37, then detergent A is cheaper.\r
\n" ); document.write( "\n" ); document.write( "mustard:
\n" ); document.write( "if 6 ounces of mustard A cost .88, then 12.5 ounces of mustard A would cost 12.5/6 * .88 = 1.833...
\n" ); document.write( "since 12.5 ounces of mustard B cost 1.61, then mustard B is cheaper.\r
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\n" ); document.write( "\n" ); document.write( "canned tuna:
\n" ); document.write( "if 6 ounces of canned tuna A cost 1.09, then 8.75 ounces of canned tuna A would cost 8.75 / 6 * 1.09 = 1.589...
\n" ); document.write( "since 8.75 ounces of canned tuna B cost 1.29, then canned tuna B is cheaper.\r
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\n" ); document.write( "\n" ); document.write( "both methods will yield the same answer.\r
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