SOLUTION: A building 80 feet high casts a shadow of 20 feet. A nearby building casts a shadow of 40 feet. How tall is the second building?

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Question 332436: A building 80 feet high casts a shadow of 20 feet. A nearby building casts a shadow of 40 feet. How tall is the second building?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
building 80 feet
shadow 20 feet
..
building x feet
shadow = 40feet
..
direct variation
40/20= x/80
80*40/20
= 160 feet