the average speed of a train running at the rate of 30km/hr during the first 100km at 40km/hr during the second 100km at 50km/hr during the third 100km is
Answers
Answered by
1
Answer:
The correct option is C 38.3 Km/h
Time taken to cover first 100 kilometres
=
100
30
=
3
1
3
h
Time taken to cover second 100 kilometres
=
100
40
=
2
1
2
h
Time take to cover last 100 kilometres
=
100
50
=
2
h
Total time taken
=
3
1
2
+
2
1
2
+
2
=
10
3
+
5
2
+
2
=
47
6
h
Total distance covered = 300 Km
∴
Average speed
=
300
47
6
=
300
×
6
47
=
38.3
K
m
/
h
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Answered by
0
Answer:
38.3 is the speed of it
hope it will help you
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