Question
The bar graph shows the number of pets owned by the families living in a block of flats. There are a total of 110 pets in the block. The bar that shows the number of families that has 7 pets is not drawn. How many families have 7 pets?

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The bar graph shows the number of pets owned by the families living in a block of flats. There are a total of 110 pets in the block. The bar that shows the number of families that has 7 pets is not drawn. How many families have 7 pets?