Question

A building is casting a 140 foot shadow at the same time a nearby post is casting a 10 ft shadow. If the post is 18 feet tall how tall is the building

Answer 1

Answer: 252 feet tall

Explanation:

1) make a proportion

x/18=140/10

2)solve

10x=140*18

x=140*18/10

x=14*18

x=252

3) Answer

The building is 252 feet tall