A student goes from his to his friend`s house with speed ` v_1`. Finding the door of his friend`s home closed, he returns back to his own house with the speed ` v_2`. Then the averge speed and net displacement of student is [consider distance between two houses be S].

Anil goes to his office at the speed of 35 km/hr and returns to his home at the speed of 30 km/hr. If he takes total 39 hours, then what is the distance between his office and home?

Rajesh goesto his office at the speed of 25 km/hr and returnsto his homeat the speed of 20 km/hr. If he takes total 9 hours, then whatis the distance between his office and home?

A student goes to school with a uniform speed of 3 km h^(-1) and returns to his home with a speed of 2km h^(-1) , if the student taken 1 hour in all, then find out find distance between the school and the house.

A boy goes from his house to school by bus at a speed of 20 km h^(-1) and returns back through the same route at a speed of 30 km h^(-1) . The average speed of his journey is :

A persons pedals from his house to his office at a speed of x_1 km/hour and returns by the same route at a speed of x_2 km/hour. What is his average speed?

A boy goes to school from his home at a speed of x km/h and comes back at a speed of y km/h, then his average speed is-

Veckat went to his collage from his house on his car with a unifrom speed of 60 km h^(-1) and returns to his house with a different speed. If the average speed of the car, for whole journey is 50 km^(h-1) , then find the speed of his car when it travelled from college to house.