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How much revenue did an author receive from the sale of 2000 books, some of which were sold at full price and the remainder of which were sold at half price?
(1) Four times as many books were sold at full price as were sold at half price.
(2) The full price of a book was $10.
[spoiler]OA=C[/spoiler]
Source: Veritas Prep
(1) Four times as many books were sold at full price as were sold at half price.
(2) The full price of a book was $10.
[spoiler]OA=C[/spoiler]
Source: Veritas Prep
