A moving train, 66 metres long,
overtakes another train of 88
metres long, moving in the same
direction in 0.168 minutes. If
the second train is moving at 30
km per hr, at what speed is the
first train moving?
A 85 km/hr. B. 50 km/hr.
C. 55 km/hr. D. 25 km/hr
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D is the answer of this question
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