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Question

The price of a book is 20 more than the cost of a copy. Write an expression for the cost of copy by taking the cost of book to be Rs x.


  1. 20x

  2. x/20

  3. x + 20

  4. x – 20


Solution

The correct option is D

x – 20


Price of the book is x. Since, price of the book is 20 more than price of the copy, hence, price of the copy will be x - 20.

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