2. The clock in the clock tower in town A is broken. It was repaired but now the clock needs to be set. A train leaves for the nearest town B, 150 miles away. It returns 4 hours later wth a report that the time according to the clock tower B is 6:15. a. By using Cristian's algorithm, to what value should the time be set on the clock tower? b. The maximum speed that the train can travel is 50 mph. What is the error of the clock