Answer: 1.5km
Step-by-step explanation:
The pedestrian is walking 3 kilometers per hour, we want to know how many kilometers he would walk in o.5 hours, so 0.5 is the same as 1/2, and 1/2 of an hour is 30 minutes, so if you split an hour in half, you have to do the same with the kilometers, so 3 divided by 2, gives us 1.5, so the answer would be 1.5km
