in a journey of 270 km, a train covers the first 162km at 15m/s and the remaining distance at 27km/hr. Find the total time taken for the whole journey. Also find the average speed of the whole journey.
Answers
Answered by
0
Answer: 6.7 hrs
Step-by-step explanation:
Answered by
0
Explanation:48 km/h
Let total distance = d
t
1
=
40
d/2
=
80
d
andt
2
=
60
d/2
=
120
d
Total time =t=t
1
+t
2
Average speed
t
d
=
t
1
+t
2
d
=
80
d
+
120
d
d
=
80+120
80×120
=48km/hr
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