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a book club promises to send 8 books for$1, if you join the club. after you receive the 8 books, you may select more books at a rate of $19.99 per book. if you spend a total of $87.96, how many extra books did u purchase

Respuesta :

Number of books bought AFTER=x
Cost of those books is 87.96-8=79.96
This is 4 extra books, because $79.96/4=$19.99
Note, the wording is not good. The book club sends 8 books for $1 EACH. That is needed to make this question answerable. As written, it sounds like 8 books were for $1.

Hope this answers your question!

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