Brainteaser #25- Collision Course -
Two missiles are heading towards each other on a collision course. One missile is traveling at 9,000
miles per hour and the other is traveling at 21,000 miles per hour. They are 1,317 miles apart at the
moment. Without using pencil and paper, can you calculate how far apart the two missiles will be exactly
one minute before they collide?
: The missiles are traveling at a combined speed of 30,000 miles per hour.
: The missiles will be 500 miles apart.
: The two missiles are heading towards each other with a combined speed of
30,000 miles per hour which works out to 500 miles per minute. Working backwards, one minute before
the collision they are exactly 500 miles apart!
Do you have a suggestion
for this puzzle (e.g. something that should
be mentioned/clarified in the question or solution, bug, typo, etc.)?