A man standing 5 feet from the base of a lamppost casts a shadow 8 feet long. If the man is 6 feet tall and walks away from the lamppost at a speed of 350 feet per minute, at what rate, in feet per minute, will his shadow lengthen?

Question

anonymous · Answer

a) -1120
b)-560
c)1120
d)560
e)280

lukecrayonz · Answer

Strange retriceproblem to say the least.

lukecrayonz · Answer

Well, we can eliminate A & B, since you can't have a negative length.

lukecrayonz · Answer

The answer is C I think, but that's using logic, which isn't good.

lukecrayonz · Answer

Actually, it might be D haha

lukecrayonz · Answer

8/5 to find the ratio of lengths, which is 1.6. 1.6*350, 560.

lukecrayonz · Answer

His height plays no role in the question.

lukecrayonz · Answer

Yeah, it's D, sorry.

anonymous · Answer

thanks!