A man goes uphill with an average speed of 24 km/h and comes down with an average speed of 36 km/h. The distance travelled in both the cases being the same. the average speed for the entire journey is (a) 30 km/h (b) 28.8 km/h (c) 32 km/h (d) None of these
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Answer:
a) 30 km/h
Step-by-step explanation:
Average speed of going uphills= 24
Average speed of going downhills= 36
Average speed= {(24+36)/2} km/h
= {60/2} km/h
= 30 km/h
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