A bus travels at a speed of 40 km/h for 30 minutes and then, at a speed of 60 [3]
km/h for the next 40 minutes. Calculate the average speed (in km/h) for the
entire journey.solve if
Answers
Answered by
1
Answer:
36/7
Explanation:
1st case s =40km/h ,t = 30min, d = S x t = 1200km, 2nd case s =60km/h , t= 40 min d=s x t = 60 x 40 = 2400 km , average speed =total distance /totaltime= 2400+1200/40+30=36/7km/h
Answered by
1
Answer:
distance covered for first 30 minutes = 40×30/60
= 20 km
distance covered for next 40 minutes = 40×60/60
= 40 km
Average speed =distance/time
= (40+20)/ (30+40)
=60/70
=60/ 1hr 10 min
=51.4 km /hr
Ans: the average speed is 51.4 km /hr
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