Brain Teaser 2 for fun ... yes I have the answer?

Question

Please don't accuse me of asking you to do my homework. I have the answer to this question and am only posting it for fun:

Two missiles speed directly toward each other, one at 9000 mph and the other at 21000 mph. They start 1317 miles apart. How far apart were they one minute before colliding?

Well done Scott. You got it.

Answer 1

500 miles
They approach each other at 30000 mph.
At that rate, they are 1 minute apart at 30000/60 miles.
The distance they started apart is irrelevant.

Answer 2

Missile one moves at 9000 mph, or 150 miles per minute.

Missile two moves at 21000 mph, or 350 miles per minute.

So one minute before they collide they are 150 + 350 = 500 miles apart.

Answer 3

1317

Answer 4

since they are moving towards each other, the distance between is decreasing at the rate of 30,000mph which is 500 miles per minute therefore one minute prior to collision, they were 500 miles apart because a minute later they met at a point.

Answer 5

in one hour the missiles move at 30000 miles per hour
thus in one minute it wlll move 30000 / 60
==> 500 miles

thus, the missiles were 500 miles apart one minute before colliding.

Answer 6

i grew to become into posting something some video interest and somebody in simple terms raged with a internet site of insults on me an my call, family, and supposedly a dogs that I had. His answer grew to become into maximum in all probability suggested by using somebody in view that query have been given suggested.

Answer 7

500 miles.

Answer 8

just ask my teacher.. hehehe...