ab bus travel a distance of 120 km with the speed of 40 km per hour and returns with a speed of 30 kilometre per hour calculate the average speed for the entire exam in Journey
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Answered by
5
Answer:
34.2857 kmph
Explanation:
t1 =120/40 = 3 h
t2 =120/30 = 4h
avg speed = (120+120)/(3+4) = 240/7 = 34.2857 kmph
Answered by
4
Explanation:
》time 1=120/40=3hr
》time2=120/30=4hr
》average speed =total distance travelled/ total time taken
》 =120+120/3+4
=240/7 km / hr
= 34.29 km/hr
I hope my ans is correct
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