document.write( "Question 510774: I saw this problem:
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document.write( "At Joe's Restaurant, one-fourth of the patrons are male and one-fifth of the patrons are from out of town. What proportion would you expect to be male and out of town?
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document.write( "Someone answered it this problem like this:
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document.write( "For this kind of problem, you mulitply the two fractions. So 1/4 x 1/5 = 1/20. We would expect 1/20 of the patrons to be both male and from out of town.\r
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document.write( "Here is a way to visualize this.\r
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document.write( " In Town Out of Town Total
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document.write( "Male 4 1 5
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document.write( "Female 12 3 15
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document.write( "Total 16 4 20\r
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document.write( "Imagine that there are 20 people in the restaurant. Five are male (so 5/20 = 1/4) and 4 are from out of town (so 4/20 = 1/5). One way to show this is with the chart above. Only 1 person (1/20) is both male and from out of town.\r
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document.write( "My question is:
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document.write( "What is the reasoning behind the sentences below???? I don't understand that.
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document.write( "For this kind of problem, you mulitply the two fractions. So 1/4 x 1/5 = 1/20. We would expect 1/20 of the patrons to be both male and from out of town.
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Algebra.Com's Answer #341888 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! the key here may be \"expect\"\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you know that 1/4 are male and 1/5 are from out of town\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you would expect that the male patrons would have the same portion of out-of-towners as the female patrons\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "similarly, you would expect that the out-of-towners would have the same portion of males as the local patrons\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "either way you look at it, 1/5 of the males or 1/4 of the out-of-towners will give you the same \"expected\" result \n" ); document.write( " |