From 11:00 a.m. to 12:25 p.m. is 1 hour and 25 minutes, or 1.42 hours.
Traveling at 4 km/h, they would cover a distance of 4 km/h * 1.42 h = 5.68 km.
So, they would be at point C, which is 15 km - 5.68 km = 9.32 km away from point B.
They have 1 hour and 35 minutes, or 1.58 hours, to cover a distance of 9.32 km to reach point B.
Thus, they will have to go at a speed of 9.32 km / 1.58 h ≈ <<9.32/1.58=5.90>>5.90 km/h to reach point B by 14:00pm. Answer: \boxed{5.90}.
Points A and B on a map are 15 km apart if you follow the path. A troop of boy scouts leaves point A at 11:00 a.m. They are all carrying packs and travel 4 km/h until they reach point C at 12:25pm. From point C, if they want to reach point B by 14:00pm, how fast will they have to go?
1 answer