MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Mean

A car travels...

Question

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

Open in App

Solution

Average speed of the car when it moves equal distance with different speeds is given by $V_{a v g} = \frac{2 V_{1} V_{2}}{V_{1} + V_{2}}$
$⟹ V_{a v g} = \frac{2 \times 20 \times 30}{20 + 30} = 24 k m / h r$

Suggest Corrections

thumbs-up

2

Similar questions

Q. A car travels from

A

B

20 k m / h

and returns at a speed of

30 k m / h

. The average speed of the car for the whole journey is:

Q. A person travels in a car from his village to a town at a speed of

50

km/hr for four hours. There he spends an hour moving about

20

kms. He then returns to his village at a speed

40

km/hr. His average speed over the whole journey (in km/hr) is :

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Central Tendency

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Standard XII Mathematics

Join BYJU'S Learning Program

CrossIcon