Question 1187426
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Ron paid $14 for a book and 4 pens. The price of each pen was 5/8 the price of the book. 
How much did Ron pay for the book?
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Let x = the price for the book, in dollars.

Then the proce for each pen is {{{(5/8)x}}}.


The total cost equation is


    x + {{{4*(5/8)x}}} = 14.


Simplify and solve 


    x + {{{(5/2)x}}} = 14

    2x + 5x = 28

      7x    = 28

       x    = 28/7 = 4  dollars.    <U>ANSWER</U>
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Solved.