A train is going on a journey. First it travels east for 50 kilometers. Then it turns north and travels for 22 kilometers. Next
it goes west for 50 kilometers. Finally, it travels south for a certain number of kilometers. At the end of its journey it is back at its original location. How many kilometers did it travel in the southward direction?
Because the train traveled north 22 kilometers and when given the information that the train returned to its original position we know that the train also traveled north the same distance.