Question

sally is 5ft tall. she stands 6ft in font of a tree and casts a shadow 3ft tall. how tall is the tree

Answer 1

First, we make a diagram

To solve this problem, we have to use the basic proportionality problem.

`(y)/(6+3)=(5)/(3)`

Then, we solve for y

`\begin{gathered} (y)/(9)=(5)/(3) \\ y=(5\cdot9)/(3) \\ y=15 \end{gathered}`

Hence, the tree is 15 feet tall.