Question

At 10 am the shadow of a post on a pergola is 12 feet long. At the same time the shadow of Jimmy, who is 6 feet tall, is 7 feet long. What is the approximate height of the post?

Answer 1

height: 12 ft
6×7=12
approx. 10 ft

Answer 2

The approximate height of the post is
`10.3\ ft`

Explanation:

we know that

Using proportion

`(6)/(7)(height)/(shadow)=(x)/(12)(height)/(shadow)\\ \\x=12*6/7\\ \\x= 10.3\ ft`