SOLUTION: Hi 30 books and magazines were on a shelf. Each book costs $5 while each magazine costs $3. The total cost of the books was $6 more than the magazines. How many books were on the

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Question 1198811: Hi
30 books and magazines were on a shelf. Each book costs $5 while each magazine costs $3. The total cost of the books was $6 more than the magazines.
How many books were on the shelf.
Thanks
Answer by ikleyn(52879) About Me  (Show Source):
You can put this solution on YOUR website!
.
30 books and magazines were on a shelf. Each book costs $5 while each magazine costs $3.
The total cost of the books was $6 more than the magazines.
How many books were on the shelf.
~~~~~~~~~~~~~~~~ 

x books, 30-x magazines.

Money equation is

    5x -3*(30-x) = 6  dollars.


Simplify and find x

    5x - 90 + 3x = 6

    8x = 90+6 = 96

     x        = 96/8 = 12.


ANSWER.  12 books.

Solved.