A dog starts chasing to a cat 2 hours later. It takes 2 hours to dog to catch the cat. If the speed of the dog is 30 Km/h. What is the speed of the cat?
10 km/h
15 km/h
20 km/h
can’t be determined
Correct Option: B
Time = Distance advanced / Relative speed 2 = 2x / (30 - x) ⇒ x = 15 km/h
