2. A bus leaves a bus station at 9:00 am and travels on the Eastbound Highway. A second bus leaves the same bus station 45 minutes later and travels in the same direction on the same highway at a speed of 20 kilometers per hour faster than the rst bus. The second bus catches up with the rst bus at 12:00. How fast was each bus traveling? (Include units in your answer.) A. [3 pts] Dene variables to represent the unknowns and setup the necessary equations to answer the question. B. [3 pts] Algebraically solve the equation you created and express your final answer using a complete sentence and appropriate units. (You will not receive full credit if a trial and error method is used in place of an algebraic method.)