document.write( "Question 717398: The topic is Survery... I am very confused here is the question. \r
\n" ); document.write( "\n" ); document.write( "Eric Dangerfield interviewed 140 people in a surban shopping center to find out some of their cooking habits. He obtained the results given at the top of the next column. \r
\n" ); document.write( "\n" ); document.write( "58 use microwave, 63 use electric ranges, 58 use gas ranges, 19 microwave ovens and electric ranges, 17 use microwave ovens and gas ranges, 4 use both gas and electric ranges and 1 use all three\r
\n" ); document.write( "\n" ); document.write( "a. How many use exactly two of these kinds of appliances?
\n" ); document.write( "b. How many use at least two of these kinds of appliances?
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Algebra.Com's Answer #440283 by ankor@dixie-net.com(22740)\"\" \"About 
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Eric Dangerfield interviewed 140 people in a suburban shopping center to find out some of their cooking habits.
\n" ); document.write( " He obtained the results given at the top of the next column.
\n" ); document.write( "58 use microwave, 63 use electric ranges, 58 use gas ranges, 19 microwave ovens and electric ranges, 17 use microwave ovens and gas ranges, 4 use both gas and electric ranges and 1 use all three
\n" ); document.write( ":
\n" ); document.write( "a. How many use exactly two of these kinds of appliances?
\n" ); document.write( "\"19 microwave ovens and electric ranges, 17 use microwave ovens and gas ranges,4 use both gas and electric ranges\"
\n" ); document.write( "19 + 17 + 4 = 40
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\n" ); document.write( "b. How many use at least two of these kinds of appliances?
\n" ); document.write( "\"19 microwave ovens and electric ranges, 17 use microwave ovens and gas ranges, 4 use both gas and electric ranges and 1 use all three\"
\n" ); document.write( "40 + 1 = 41
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