The length of the plot is 12 meters. decided to plant the Christmas trees so that the distance between

The length of the plot is 12 meters. decided to plant the Christmas trees so that the distance between them was 3 meters. How many trees do you need for this?

1. We plant the first Christmas tree at the beginning of the site
2.The second is 3m from the first
3.The third is 3m from the second (this will be 6m from the first)
4. Plant the fourth one 3 m from the third (9m from the first)
5.The fifth after 3m from the fourth (12m from the first)
Between the first and the fifth Christmas tree, it turned out 12m (this is the length of the section)
Answer: 5 Christmas trees