A passenger train left the station and traveled west at an average speed of 20 km/h. Sometime later a freight train left traveling in the opposite direction with an average speed of 55 km/h. After the passenger train had traveled for 13 hours the trains were 975 km apart. How long did the freight train travel?

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte