A pole that is 20 feet tall casts a shadow 48 feet long. At the same time, another pole casts a shadow having a length of 12 feet. What is the height, in feet, of the second pole?

Answers:
a. 5
b. 8.5
c. 28.8
d. 80

help please :3

Question

A pole that is 20 feet tall casts a shadow 48 feet long. At the same time, another pole casts a shadow having a length of 12 feet. What is the height, in feet, of the second pole? 

Answers: 
a. 5 
b. 8.5
c. 28.8
d. 80

help please :3

anonymous · Answer

(48/20)x12=28.8

anonymous · Answer

You can solve this by setting up proportions:
$$20/48=12/x$$

Just make sure you keep the length of the shadow/ length of the pole in the same place in each fraction.  Now you just have to solve for x.

anonymous · Answer

Thank you :)

anonymous · Answer

By doing 48 divided by 20 you find the length of the shadow for every feet then by multiplying by 12 you get it for 12 feet