Bus X travels a distance of 360 km in 5 hours whereas bus Y travels a distance of 476 km in 7 hours. Which bus travels faster ? 

For bus X. 

Speed = $\frac{Distance}{Time}$

Speed=$\frac{360}{5}=72km/h$ 

For bus y, 

Speed = $\frac{Distance}{Time}$

Speed=$\frac{476}{7}=68km/h$

Speed of bus X is more than that of bus Y. 

Hence, bus X travels faster.