Bartholomew rides his bike at a constant speed for 6 km. That part of his ride takes a total of 1 hour. He then rides his bike at a constant speed for another 9 km. That part of his trip takes a total of 2 hours. What is his average speed?
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Answer: Bartholomew's average speed is 5 km/hr
Explanation:
Average speed = total distance / total time
= 6+9 / 1+2
= 15 / 3
= 5 km / hr
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