Question

Andrea cycles 9 km on her bike in 2 hours. calculate her average speed in kilometers per hour.​

Answer 1

4.5 km per hour

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Answer 2

4.5km/h

Explanation:

Here we know that she does 9 km per 2 hours. If we know how much she can travel in 2 hours it's very easy to find out how much she travels in 1. Because half of 2 hours is one hour. So we can simply half 9 km to find how much she travels in 1 hour:

9/2 = 4.5

4.5km/h

I hope this makes sense :)