A car travels at 80 km/h for the first journey, 90 km/ h for the second journey and 102 km/ h for the third of its journey. What is its average speed
Answers
Answered by
0
Answer:
hi sister how are you still
Explanation:
will you be my ggffggh
Answered by
1
Answer:
60 KM
Explanation:
Let the each half of the running time be t.
During first half time, speed of car is 80 km/h
Distance covered d
1
=80t km
During second half time, speed of car is 40 km/h
Distance covered d
2
=40t km
Total distance covered d=d
1
+d
2
=80t+40t=120t
Total time taken T=2t
Average speed v
avg
=
T
d
=
2t
120t
=60 km/hr
Option C is correct.
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