There are two bicycle riders travelling towards each other, each travelling at 10Km/hr and the distance between them is 60km. There is also a butterfly that is flying back and forth at 20km/hr between the two riders until it is finally crushed when both riders meet at the mid-point.
Appreciate the help
- what is the time duration of the butterflies second last lag (i.e. flying from rider 1 to rider 2)?
- what is the time duration of the butterflies last lag (i.e. flying back to rider 1 where it meets its DEATH)
- Is there a simple formula of working this out?