Home
Class 7
REASONING
A car travels 40 km at an average speed ...

A car travels 40 km at an average speed of 80 km/h and then travels 40 km at an average speed of 40 km/h. The average speed of the car for this 80 km trip is

A

40 km/h

B

45 km/h

C

48 km/h

D

53 km/h

Text Solution

Verified by Experts

The correct Answer is:
D
Average speed = `(80)/(40/80+ 40/40)` = 53.3 km/h
Promotional Banner

Topper's Solved these Questions

  • NSO QUESTION PAPER 2018- 19 SET - B

    SCIENCE OLYMPIAD FOUNDATION |Exercise LOGICAL REASONING|10 Videos

  • NSO QUESTION PAPER 2019- 20 SET - B

    SCIENCE OLYMPIAD FOUNDATION |Exercise LOGICAL REASONING|10 Videos

Similar Questions

Explore conceptually related problems

A cyclist covers his first 20 km at an average speed of 40 kmph, another 10 km at an average speed of 10 kmph and the last 30 km at an average speed of 40 kmph. Then the average speed of the entire journey is

A car driver travels from the plains to a hill station, which are 200 km apart at an average speed of 40 km/h. In the return trip he covers the same distance at an average speed of 20 km/h. The average speed of the car over the entire distance of 400 km is

A car travels 30 km at a uniform speed of 40 km//h and the next 30 km at a uniform speed of 20 km//h . Find its average speed.

A boy rides his bicycle 10 km at an average speed of 12 "km"//"hr" and again travels 12 km at an average speed of 10 "km"//"hr" . His average speed for the entire trip is approximately

A car driver travels from the planes to a hill station . Which are 200 km apart at an average speed of 40 km/h . In the return trip he covers the same distance at an average speed of 20 km/h . The average speed of the car over the entire distance of 400 km is

A bus covers the first 10 km of its journey at an average speed of 40 km/h and the remaining 45 km at an speed of 60 km/h. The average speed of the bus for its total journey is

A car travels from A to B at a speed of 20 km//hr and returns at a speed of 30 km//hr . The average speed of the car for the whole journey is

A bus covers the first 10km of its journey at an average speed of 40 km/h and the remaining 45 km at an speed of 60 km/h. The average speed of the bus for its total journey is