yoji i cant pm you for some reason but thanks for explaining that. i understood it after reading it a few times.. some parts i had to read more than a few times lol.
where i went wrong was pretty early(as you probably noticed).. i didnt think about "since both cars meet at C, then those 2 times are equal".. i didnt make the "a/36=324/b" equation and go from there.
if i did, i dont think i wouldve gotten much further on my own anyways though. thanks again.. i wouldve gone nuts trying to figure that out bc i wouldnt have been able to!
here is a common sense riddle:
A man is six feet tall, is a clerk at a butcher shop, and wears size 11 shoes.
What does he weigh?