Incorrect. Using the formula distance = rate * time, or d=rt, you can generate a system of equations to model this problem:
| Distance | = | Rate | * | Time | |
| Train A | = | 55 | * | t | |
| Train B | = | 45 | * | t |
How can you express the distances traveled by Train A and Train B? Once you have that information, can you solve the system for t?