Solve. -An Express and Local Train Leave GraysLake at 3 P.M

Multiple Choice

Solve.
-An express and local train leave GraysLake at 3 P.M. and head for Chicago 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's rate = 50 mph and local's rate = 25 mph.
B) Express's rate = 25 mph and local's rate = 12.5 mph.
C) Express's rate = 60 mph and local's rate = 30 mph.
D) Cannot be determined with information given.