Question

A train travels a distance of 10 km with a uniform speed of 30 km/h it travels another distance of 20/km with a uniform speed of 40 km/h calculate the average speed of the train.
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Answer 1

Answer:

Average speed is equal to 40kmph

Explanation:

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

Answer 2

Explanation:

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