54 km/hr വേഗത്തിൽ സഞ്ചരിക്കുന്ന 140 മീ നീളമുള്ള ട്രെയിൻ 160 മീ നീളമുള്ള പാലം കടന്നു പോകാൻ എത്ര സമയം എടുക്കും ?
A10 സെക്കൻഡ്
B12 സെക്കൻഡ്
C15 സെക്കൻഡ്
D20 സെക്കൻഡ്
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