If the price of the horse is twice as the price of a saddle and the price of the saddle is the twice as the price of the trail, what is the price of the trail if a man got only 100$?

Randy and molly are selling pies for a school fundraiser customers can buy blueberry pies and pumpkin pies brandy sold 6 blueberry pies and for pumpkin pies for a total of $106 molly sold 6 blueberry pies and 3 pumpkin pies for a total of $90 find the cost of each one blueberry pie and 1 pumpkin pie