Question 448913
Given: total time = 3 min.
Let h = the height of the tree
Since time = distance/rate, we can write the following equation for the total
time up and down the tree:
h/10 + h/20 = 3
Solve for h:
(2h+h)/20 = 3
3h = 60
h = 20
Therefore, the height of the tree = 20 ft.