a student while going to school in a school bus observes the average speed to be 20 km/h, while returning average speed =30 km/h. find average speed for the entire journey
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Average speed will be =20+30/2
=50/2km/h
=25.5kh/h
=50/2km/h
=25.5kh/h
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Answer:
24km/hr
Explanation:Average speed =2xy/x+y
=2×30×20/20+30
=2×30×20/50
=2×3×4=24
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