if train a leaves chicago station at 8 am at 40 mph and trai

if train a leaves chicago station at 8 a.m. at 40 mph and train b leaves the same station at 9 a.m what time will they meet and how many miles will they have traveled?

The equation is 40(x + 1) = 50x.
Solving the equation, I got x = 4.
The time for train a is x + 1 or 5 more than 8am taking us to 1pm.
The time for train b is x or 4 more than 9am taking us to 1pm.
They meet at 1pm.