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 24 minutes. What was the average rate of speed of the train on the return trip to Albany?
A: 60 mph
B: 50 mph
C: 48 mph
D: 40 mph
E: 35 mph
What would be the fastest / most efficient approach? The total travelling time being in hours and minutes is really annoying.
Total time taken 5 hours 24 minuets
Time taken to drive Albany to Syracuse = 120 miles /50 miles = 2 hours 24 minuets (here is a chance of doing 40 minuets instead of 24 minuets. This is a trap.)
Time taken to drive back from Albany to Syracuse = 5 hours 24 minuets - 2 hours 24 minuets = 3 hours
Speed to drive back from Albany to Syracuse = 120 / 3 hours = 40 mph.