It is important to know the rate x time = distance formula for this problem.
Bus 1 is traveling at the rate of x for 2 hours. So, the distance Bus 1 travels is 2x.
Bus 2 is traveling at the rate of x-14 for 2 hours. So, the distance Bus 2 travels is 2(x-14).
Since the meet after 2 hours, the buses will have covered the entire 264 miles. So, the total distance traveled is 264. You can set up the equation:
2x + 2(x-14) = 264
Solve for x.
2x + 2x - 28 = 264
4x = 292
x = 73
So Bus 1 has a rate of 73 miles per hour.
Bus 2 has a rate of 59 miles per hour (73 - 14).