Question

A 5 foot tall pole casts a 3 1/3 foot shadow. At the same time an oak tree casts a 20 foot shadow. How tall is the tree?

Answer 1

30 feet tall

Explanation:

Set up a proportion where x is the height of the tree

`(5)/(3(1)/(3) )` =
`(x)/(20)`

Cross multiply and solve for x:

100 = 3
`(1)/(3)`x

30 = x

So, the tree is 30 feet tall