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The product of the page numbers on two facing pages of a book is 240. Find the page numbers.

 Dec 3, 2015

Best Answer 

 #2
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The product of the page numbers on two facing pages of a book is 240. Find the page numbers

 

The esiest way to solve a problem like is to take the sqrt of 240=15.49. then you round one number up to 16 and round the other number down to 15. So, your numbers are 15 and 16. This is not a proper algebraic way of doing it, but you get your accurate answer anyway.

 Dec 3, 2015
 #1
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x^2+x-240=0

x^2+16x-15x-240=0

x(x+16)-15(x+16)=0

(x+16)(x-15)=0

x=16 OR 15

 

Answer---15 and 16

 

I hope 

 Dec 3, 2015
 #2
avatar
+10
Best Answer

The product of the page numbers on two facing pages of a book is 240. Find the page numbers

 

The esiest way to solve a problem like is to take the sqrt of 240=15.49. then you round one number up to 16 and round the other number down to 15. So, your numbers are 15 and 16. This is not a proper algebraic way of doing it, but you get your accurate answer anyway.

Guest Dec 3, 2015

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