A park ranger calculated that 60% of the deer they tagged were male. Of the male deer that were tagged, 20% of them were older than 4 1/2 years. They tagged 18 male deer that were older than 4 1/2 yea

A park ranger calculated that 60% of the deer they tagged were male. Of the male deer that were tagged, 20% of them were older than 4 1/2 years. They tagged 18 male deer that were older than 4 1/2 years. How many deer did they tag?