A train travels from Albany to Syracuse, a distance of 120 miles, at the average rate of 50 miles per hour. The train then travels back to Albany from Syracuse. The total travelling time of the train is 5 hours and 30 minutes. What was the average rate of speed of the train on the return trip to Albany?
Choose the correct choice from the following choices.
A) 31
B) 38.7
C) 35
D) 36
E) 39

Rationale: 50 * t = 120 therefore t = 120 / 50 = 2.4 on return speed * ( 5.5 - 2.4 ) = 120 therefore t = 120 / 3.1 = 38.70 b
Answer: B