Question

6. An author receives royalty at 7% of the selling price of the the first 5000 books; 10% of the selling
price on the next 5,000 books; 12 —% of the selling price on the rest of the sales. How much will
he receive if 15,000 copies are sold at 80 each?
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Answer 1

Answer:

Pretty simple, it's just the number of books you sell, times the list price, times the royalty ... 99 sale price you assume you'll get 45% of £7.