Question

A bicyclist was traveling from the village to the railroad station with a speed of 15 mph and he was coming back to the village with a speed of 10 mph. Find the distance from the village to the railroad station, if it’s known that it took 1 more hour for the bicyclist to get back to the village. Answer:

Answer 1

time = distance / speed
d/10 -d/15 = 1 . . . . . the distance took 1 more hour to travel at 10 mph than at 15
3d -2d = 30
d = 30

The distance from the village to the railroad station is 30 miles.