Q: A train is moving from north to south direction. It overtakes Raj and Madhur who are walking in the same direction at the rate of 2 km/h and 4 km/h in 9 sec and 10 sec, respectively. If the train is x meters long, find the value of x.
A.
70
B.
30
C.
90
D.
50
Correct Answer:
Option D -
Explanations:
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