Average speed of journey when certain distance covered by x km/hr and y km/hr

A car travels the first one-third of a certain distance with a speed of 10 km/hr, the next one-third distance with speed of 20 km/hr and the last one-third distance with a speed of 60 km/hr. The average speed of the car for the whole journey is

A car covers a certain distance in 5 hours at the speed of 73 kms/hr. What is the average speed of bus which travels a distance of 50 kms less than the car in the same time ? Options are (a) 61 km/hr (b) 58 km/hr (c) 65 km/hr (d) 63 km/hr.

Bus covers a certain distance at constant speed in certain time .Speed of bus is directly proportional to covered distance and inversely proportional to the square root of time taken by bus .If bus covers 60 km . In 4 hrs . At a speed of 40 km /hr then find distance travelled in 9 hrs . at speed of 44km./hr ?

A train runs at an average speed of 75 km/hr . If the distance to be covered is 1050 Km . How long will the train take to cover it ?

A man completes a journey in 8 hours. He covers half the distance at 40 km/hr and the rest at 60 km/hr. The length of the journey is :

The speed of car is 55 km/hrs. The distance covered in y hours is _____ .

Some part of journey of 555 km was completed by a car with speed 60 km/hr. Then the speed is increased by 15 km/hr and the journey is completed. If it takes 8 hours to reach, find the time taken and distance covered by 60 km/hr.