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Applications (Word Problem)

There are x n...

Question

There are x number of grammar books, each of 10 dollars and y number of dictionaries, each of 15 dollars in a backyard sale. Which of the following gives the total price of the books and dictionaries?

A

(10x + 15y) dollars

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B

(10 + 15)xy dollars

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C

(10y + 15x) dollars

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D

25xy dollars

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Solution

The correct option is A (10x + 15y) dollars
Price of 1 grammar book = 10 dollars

Price of x number of grammar books = 10x dollars

Price of 1 dictionary = 15 dollars

Price of y number of grammar books = 15y dollars

Total price of the books and dictionaries = (10x + 15y) dollars

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