3.
A train covers the first half of the distance between
two stations at a speed of 40km/hr and the other half
at 60km/hr. Then, its average speed is
a) 52 km
b) 50km
c) 48km d) 100km
Answers
Answered by
2
Answer:
Let total distance = d
t1=40d/2=80dandt2=60d/2=120d
Total time =t=t1+t2
Average speed td=t1+t2d=80d+120dd=80+12080×120=48km/hr
Answered by
3
Answer:
48 is the answer.....,....
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