Joe has travelled a distance of 60 km from town A to town B in 3 hrs. And then another 40 km from town B to town C in 2 hrs. Find the average speed for his entire journey.

10 km/hr

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25 km/hr

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50 km/hr

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20 km/hr

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Solution

The correct option is D
20 km/hr

We have known that Average speed = $\frac{T o t a l d i s t a n c e c o v e r e d}{T o t a l t i m e t a k e n}$

Here, the total distance which he has covered is = 60 km + 40 km = 100 km

And, the total time taken = 3 hrs + 2 hrs = 5 hrs

So, Average speed = 100 km/ 5 hrs = 20 km/hr

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