Superman and Flash are running around the world in opposite directions. Superman can go all the way around the world in 2.5 hours and Flash can do the same in 1.5 hours. If they start at the same time and same place, then let B = the number of times they will pass each other going in opposite directions in a 24-hour period.

Question

anonymous · Answer

is B=25

anonymous · Answer

How?

anonymous · Answer

they meet each other after 15/16 hr

anonymous · Answer

Oh ok. Is this how you do it?
$$\frac{x}{2.5} + \frac{x}{1.5} = 1$$
Then you multiply by 24 because it's a 24 hour period?