Mathematics
Grade6
Easy

Question

Rob went to a bookstall. He bought history and literature books in the ratio 4:7. If he bought 16 history books, find the number of literature books bought by him.

  1. 28
  2. 12
  3. 10
  4. 22

hintHint:

In mathematics, a ratio indicates how many times one number contains another.

The correct answer is: 28


    Here, it is given that Rob bought history and literature books in the ratio 4:7. Number of history books = 16. We have to find the number of literature books.
    Let the number of history and literature books be 4x and 7x respectively.
    Then, 4x = 16.
    => x = 16/4
    => x = 4.
    So, number of literature books = 7x = 7×4 = 28.
    Hence, the correct option is A.

    Ratio is another way of representing decimals, fractions and percentage.

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