A train 150 m long passes a pole in 15 seconds and crosses another train of the same length travelling in opposite direction in 8 seconds . The speed of the second train in (km/h) is __
A. 60 km /hr
B. 66km /hr
C. 72 km / hr
D. 99 km / hr
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সঠিক উত্তরঃ
D.
99 km / hr
Explanation:
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