A boy cycles 15kilometer to school in 55 minutes,find his average speed in a meter per second

Answer 1

1 km = 1000 m

15 km = 15000 m

1 min = 60 s

55 min = 55 • 60 = 3300 s

15000 m/ 3300 s =

300 • 50 / 300 • 11 = 50 / 11 m / s