List of top Mathematics Questions on Average Speed asked in CUET (UG)

A person walks from his house to his office at a speed of x1 km/hr and returns by the same route at a speed of x2 km/hr. What is his average speed ?
Arun covers first 28 kms of his journey in 45 minutes and the remaining 32 kms in 35 minutes. What is his average speed in m/s ?