a car moves with a speed of 80km/hr from station x to y and back from y to x with a speed of 100km/hr
i)what is its average speed
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Answer:
48 km/hr
Step-by-step explanation:
Using speed =
Time
Distance
⇒Time=
speed
distance
We have total time =
60
100
+
40
100
=
6
25
Hr
Now, Average speed =
Time
(tot)
Distance
(tot)
=
6
25
200
⇒ Average spped =
25
1200
=48km/h
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