document.write( "Question 1061868: In a survey of 68 pet owners, 20 said they own a dog, and 21 said they own a cat. 18 said they own both a dog and a cat. How many owned a cat but not a dog? \n" ); document.write( "
Algebra.Com's Answer #676631 by ikleyn(52786)\"\" \"About 
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\n" ); document.write( "In a survey of 68 pet owners, 20 said they own a dog, and 21 said they own a cat. 18 said they own both a dog and a cat.
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\n" ); document.write( "\n" ); document.write( "How many owned a cat but not a dog? 21 - 18 = 3.\r
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\n" ); document.write( "\n" ); document.write( "Answer. 3 pet owners owned a cat but not a dog.\r
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\n" ); document.write( "P.S. I don't know to which question answered the tutor \"addingup\".\r
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