Read the passage and answer the given question.

Maria buys books from a dealer for her bookstall. She buys 40 comic books, 30 storybooks, and 20 colouring books. The cost of a colouring book is $x. The cost of a comic book is $5 more than twice the cost of a colouring book. The cost of a storybook is $7 less than thrice the cost of a colouring book.

Which of the following expressions will give the total cost of the comic books bought by her?

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• A 2x+5
• B 2x
• C 40(2x+5)
• D 80x

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Answer: C. 40(2x+5)

The cost of one colouring book is x
.
One comic book costs "5 more than twice x," which is (2x+5).
Maria bought 40 comic books in total.
The expression for the total cost is 40(2x+5) or 80x+200
.

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