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At first, Desmond had $18.50 and Hugh had $21.65. Each of them bought a book at the same price. In the end, Hugh had twice as much money as Desmond left. How much did the book cost?

 
 Nov 24, 2022
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B==Book

 

[21.65  -  B] = 2 * [18.50  -  B], solve for B

 

B==$15.35 - cost of the book

 
 Nov 25, 2022

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