Question

A tree measured 12 1/2 feet tall. Over the next 5 1/2 years it grew to be 51 feet tall. During the 5 1/2 years, what was the average yearly growth rate of the tree?

Answer 1

7 feet

Explanation:

Let's find how many feet did the tree gain during 5 1/2 years:

51 - 12.5 = 38.5

Now devide this number by 5 1/2 to find average length tree gained yearly:

38,5 / 5.5 = 7