Two planes fly along the same flight path in opposite directions Plane A flies from island A to island B whilst plane B flies from island B to A Plane B flies at 240km/hr Both planes pass each other after plane A has been flying for 30mins 10 mins later plane B still has 20km left to reach island A whilst plane A lands at island B What is the distance between the two islands?
+12531 If plane A flew 30 minutes, plane B also flew 30 minutes.
30min = 0.5h
240km/h * 0.5h = 120km
10min = 1/6h
240km/h * 1/6h = 40km
120km + 40km + 20km = 180km
+37146 Plane B flies 30 min + 10 min + 20 km @ 240 km/60 min
40 min * 240 km/60min + 20 km = 180 km .....as guest found ! 
