A train traveled at a speed of 70 km/hr for 5 hours and then 90 km/ hr for next 3 hours. Calculate it's average speed
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Answered by
0
Answer:
77.5 km/h
Step-by-step explanation:
70 km in 5 hrs means 350 km and 90km/h means 270 km. So total is 620 km in 8 hrs. Thus the average speed will be 620/8 which is 77.5 km/h.
Answered by
0
Step-by-step explanation:
speed x time
70 x 5 = 350km distance
90 x 3= 270km. .
total distance 350+270=620km
total time 5+3=8hrs
average speed =total distance/total time
= 620/8= 77.5km/h
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