Home
Class 12
MATHS
A man drove his car for 20 km at an aver...

A man drove his car for 20 km at an average speed of 25 km at an average speed of 25 km per hour. If his average speed for the whole distance of 40 km is to be 30 km per hour, then for the next 20 km his average speed will be :

A

`37 km//hour`

B

`37(1)/2km//hour`

C

`38 km//hour`

D

`38(1)/2 km//hour`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

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-

A boy goes to school from him home at a speed of x km/hr. and comes back at a speed of y km/hr. then the average speed of the boy is given by

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

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

A train travels first 30 miles at a speed of 15 miles/hour and the next 30 miles at a speed of 30 miles/hour . Find the average velocity of the train.

A park has a radius of 10 m. If a vehicle goes round it at an average speed of 18 km/hr, what should be the proper angle of banking?