on a 120 km long track A train travels the first 30 km at a speed of 30 km per hour of fast train travel the next 90 km so that average speed would be 60 km per hour
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hey
the average speed would be 60 km/hour
the next speed of the train would be 90 km/hour..
30+90= 120km is the distance.. and the time should be 2 hour..
hence . 30km+90km ÷ 2 hour.
120÷2= 60 km/hour
the average speed would be 60 km/hour
the next speed of the train would be 90 km/hour..
30+90= 120km is the distance.. and the time should be 2 hour..
hence . 30km+90km ÷ 2 hour.
120÷2= 60 km/hour
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