Question

Arjun, travelling from Pune to Goa, covers distance of 1000 km at 4 km/hr and the return journey at 3 km/hr. What was his average speed daring his entire journey?

Answer 1

Answer:

3.4 km/hr

Step-by-step explanation:

avg distance = total distance/ total time

During Going Goa

time=1000/4

=250 hr

During Returning

time=1000/3

=333.3 hr

Avg speed = 2000/250 + 333

= 3.4 km/hr

Answer 2

Average speed during his entire journey is 3.43 km/hr.

Step-by-step explanation:

Since we have given that

Total distance = 1000+ 1000 = 2000 km

Speed of going = 4 km/hr

Speed of coming = 3 km/hr

Since both the distance is same.

So, Average speed would be

$\dfrac{2xy}{x+y}\\\\=\dfrac{2\times 4\times 3}{4+3}\\\\=\dfrac{24}{7}\\\\=3.43$

Hence, average speed during his entire journey is 3.43 km/hr.

# learn more:

A man goes to mumbai from pune at a speed of 4 km/hr and returns to pune at speed of 6km/hr. what is his average speed of the entire journey

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