Step 1: Find the distance covered in one minute.
The person covers 600 m in 5 minutes, so in 1 minute the distance covered is \( \frac{600}{5} = 120 \) m.
Step 2: Scale this up to one hour.
There are 60 minutes in an hour, so the distance covered in 60 minutes is \( 120 \times 60 = 7200 \) m.
Step 3: Convert metres to kilometres.
7200 m is the same as \( \frac{7200}{1000} = 7.2 \) km, and since this is the distance covered in one hour, the speed is \[ \boxed{7.2 \text{ km/hr}} \]