Home
Class 12
MATHS
An automobile driver travels from a plai...

An automobile driver travels from a plain to a hill station 120 km away at an average speed of 30 km per hour. He then makes the return trip at an average speed 25 km per hour. He covers another 120 km on the plain at an average speed of 50 km per hour. His average speed (in km/hr) over the entire distance of 360 km will be

A

`(30+25+50)/(3)` km/hr

B

`(30.35.50)^(1//3)` km/hr

C

`(3)/((1)/(30) +(1)/(25)+(1)/(50))` km/hr

D

105 km/hr

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A car travels from Twon A to Twon B at an average speed of 40 miles per hour, and returns immediately along the same route at an average speed of 50 miles per hour. What is the average speed in miles per hour for the round - trip?

A car take 6 hours to reach a distination by travelling at the speed of 50 km per hour. How long will it take when the car travels at the speed of 75 km per hour ?

A man travels at a speed of 20 Km/hr. and then returns at a speed of 30 Km/hr. His average speed of whole journey is

A train travels a distance of 300 km with an average speed of 60 km h^(-1) . How much time does it take to cover the distance ?

A car covers a distance of 276.75 km in 4.5 hours. What is the average speed of the car ?

A certain jet plane has an average speed of 500 km per hour. It can carry sufficient fuel for a 5 hour flight. State the range of this relation.

A car accelerates by 50 m//s^(2). It would, attain a speed of 100 km per hour from rest in

How far will a car with average speed 60 km/h move in 4 hours?

An object travels 10km at a speed of 100 m/s and another 10km at 50 k/s. The average speed over the whole distance is:-