Answer this:
Tobias rode his bike on a road for a 2 hr period. On average, he passed a 1 km marker every 3 min during this period. Which of the following was his average speed for this 2 hr period?
Possible answers: A). 10 km/hr; B). 15 km/hr; C). 20 km/hr; D). 25 km/hr;
C).