Question

A person covers 40% of a distance with a speed of 60 km/hr and the remaining with a speed of 40 km/hr. What is average speed for the whole journey in km/hr? ​

Answer 1

Answer:

Step-by-step explanation:

Quit

Answer 2

The average speed for the whole journey is 48 km/hr.

Step-by-step explanation:

Since we have given that

Speed for 40% of a distance = 60 km/hr

Speed for remaining distance = 40 km/hr

So, Average speed for the whole journey in km/hr is given by

$\dfrac{2xy}{x+y}\\\\=\dfrac{2\times 60\times 40}{60+40}\\\\=\dfrac{4800}{100}\\\\=48\ km/hr$

Hence, the average speed for the whole journey is 48 km/hr.

# learn more:

A person covers a distance in 40 minutes if he drives a car at a speed of 45 lahe on a

average. The speed at which he must drive to reduce the time of joumey to 30 minutes is

A 42 km/h

B. 48 km/hr

C. 54 km/h

D. 60 km/h

The time it takes to​

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