6.A train travels a distance of 15 km with a speed of 30 km b' and remaining . distance of 15 km with a speed of 45 km h-1 Find its average speed in km h-1
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0
Answer:
Given,
d
1
=15km,v
1
=30km/h
d
2
=75km,v
2
=50km/h
d
3
=10km,v
3
=20km/h
we know that,
average speed =total distance covered/total time taken
total distance covered =D=15+75+10=100km
total time taken =T=(15/30)+(75/50)+(10/20)=2.5hours
so, average speed =100/2.5=40km/h
Explanation:
Answered by
0
answer:
average is 40 km per hour
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