Question

A 6-ft-tall person casts a shadow 5 ft long. A nearby tree casts a shadow 40 feet long. What is the height of the tree?

Answer 1

The tree is 48 feet tall.

Explanation:

Cross multiply. ⇒
`(5)/(6) x(40)/(x)`

5 times 8 equals 40, so 6 times 8 equals ___?

Solve. ⇒
`(5)/(6) x(40)/(x) =48`

The tree is 48 feet tall.