Practice!

Sample Problem

The table below shows the number of different books in a book store.

Novel

Comics

History book

Cooking book

17

105

11

15

Find the ratio of the followings. Simplify your answer.

1) The number of novels to the number of cooking books.

:

2) The number of comics to the number of history books.

:

3) The number of history books to the number of cooking books.

:

4) The number of novels to the number of comics to the number of cooking books.

: :

5) The number of history books to the number of total books.

:

Solution

1) Ratio of novels to cooking books: 17 : 15

2) Ratio of comics to history books: 105 : 11

3 )Ratio of history books to cooking books: 11 : 15

4) Ratio of novels to comics to cooking books: 17 : 105 : 15

5) Ratio of history books to total books: 11 : (17 + 105 + 11 + 15) = 11 : 148