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math

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Andrew has $40. He wants to buy a $15 cd and as many $6 posters as he can. What is the greatest number of posters he can buy?

I did 40>or=15+6x
-15 to each side
25/6> or=6x/6
4.17> or = x so he can buy 4 at most
Is this correct?
Thanks

  • math - ,

    ( 40 - 15 ) / 6 = 25 / 6 = 4.166

    4 posters

    Total cost :

    15 + 4 * 6 = 15 + 24 = 39 $

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