Solve the problem.An express train and a local train leave Gray Lake at 3 P.M. and head for Big City 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of the local. Find the speed of each train.
A. Express train's speed = 60 mph and local train's speed = 30 mph.
B. Express train's speed = 25 mph and local train's speed = 12.5 mph.
C. Express train's speed = 50 mph and local train's speed = 25 mph.
D. Cannot be determined with information given.
Answer: C
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