Find amount of sap the maple syrup producer would have collected from each tree if the total amount 5 gallons was redistributed among the trees

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points