A train travels the first 15 km at a uniform speed of 30 km/h ; the next 75 km at a uniform speed of 50 km/h ; and the last 10 km at a uniform speed of 20 km/h . Calculate the average speed for the entire train journey.
Answers
Answered by
2
Answer:
40km/h
Explanation:
d1=15km , s1=30km/h
d2=10km , s2=20km/h
d3=75km , s3=50km/h
total time taken= t1+t2+t3
=0.5+0.5+1.5= 2.5
speed =distance/time
100/2.5=40km/h
Answered by
4
Explanation:
40 km\h
d1=15km s1=30km\h
d2=10km s2=20km\h
d3=75km s3=50km\h
total time taken=t1+t2+t3
=0.5+0.5+1.5=2.5
speed =distance\time
100\2.5=40km\h
Plz Mark me as BRAINLIEST
Similar questions