# Emilio has 189 books to put onto 9 shelves. Some shelves hold 15 books and others hold two dozen. How many of each size shelf will Emilio use?

##### 1 Answer

Mar 13, 2018

15 book content shelf count

24 book content shelf count

#### Explanation:

This is a 'blending' of different materials type problem

Total count of shelves is 9

Total count of books is 189

Let the count of shelves for 15 books be

Then the count for 2 dozen books is

Total count of books on the shelves is:

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15 book content shelf count

24 book content shelf count