A person travels half of a total distance at 30 km/h and the remaining half at 60 km/h. If the total distance is 120 km, how much time does the person take to complete the entire journey?
3 hours
Half distance: \(60\) km. Time at 30 km/h: \(\dfrac{60}{30} = 2\) hours.
Time at 60 km/h: \(\dfrac{60}{60} = 1\) hour.
Total time: \(2+1 = 3\) hours.
Hence, the person takes 3 hours to complete the entire journey.
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