SOLUTION: A limited of a book published by a historical society was offered for sale to its members. The cost was one book for $12 or 2 books for $20. The society sold 880 books, and the tot

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Question 107543This question is from textbook algebra 2 with trigonometry
: A limited of a book published by a historical society was offered for sale to its members. The cost was one book for $12 or 2 books for $20. The society sold 880 books, and the total amount of money taken in was $9840. How many members ordered 2 books? This question is from textbook algebra 2 with trigonometry

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="members ordering 2 books", so 2x="$10 books" (2 for $20) and 880-2x="$12 books"

10(2x)+12(880-2x)=9840