At a certain bookstore, the best-selling book, "TOP," costs $8. The least-selling book, "ABC," costs $23. Thirteen "TOP" books and four "ABC" books were sold last week. What is the difference in the bookstore's earnings on these two books last week?
How much did the bookstore make on "TOP" books? ** On "TOP" books the bookstore made 13 * 8 = $<<13*8=104>>104.
How much did the bookstore make on "ABC" books? ** The "ABC" books, on the other hand, were sold for a total of 4 * 23 = $<<4*23=92>>92.
What is the difference in the bookstore's earnings on these two books last week? ** The difference between earnings from these two books is 104 - 92 = $<<104-92=12>>12.
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