A bicycle travels 15km in 30 mins. What is the average speed? Show all work to support answer.

30 km/hr

Explanation:

There are no stops so the equation is just d = r*t

r = 15 km

t = 30 minutes = 30/60 hour = 1/2 hour = 0.5 hours.

r = d/t

r = 15 km / 0.5 hour

r = 30 km / hour

That is a pretty good clip for someone who is just a 3 times a week cyclist.