Question

a plant nursery is growing a tree that is 3 ft tall and grows at an average rate of 1 ft per year. Another tree at the nursery is 4 ft tall and grows at an average rate of 0.5 ft per year. After how many years will the trees be the same height?

Answer 1

The rate of first tree's height = 3 + 1x
Of second tree = 4 + 0.5x

Where, x = number of years.
So, 3 + 1x = 4 + 0.5x
1x - 0.5x = 4 - 3
0.5x = 1
x = 1/ 0.5
x = 2

In short, Your Answer would be 2 Years

Hope this helps!