Two trains are moving in the opposite direction on parallel tracks at speeds of 64 km/h and 96 km/h respectively. The first train passes a telegraph post in 5 seconds whereas the second train passes the post in 6 seconds. Find the time taken by the trains to cross each other completely.

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Two trains are moving in the opposite direction on parallel tracks at speeds of 64 km/h and 96 km/h respectively. The first train passes a telegraph post in 5 seconds whereas the second train passes the post in 6 seconds. Find the time taken by the trains to cross each other completely.

A28/11 s

B14/11 s

C28/5 s

D14/5 s

Answer:

C. 28/5 s

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60 km/hr വേഗത്തിൽ സഞ്ചരിക്കുന്ന ട്രെയിൻ അതേ ദിശയിൽ 24 km/hr വേഗത്തിൽ സഞ്ചരിക്കുന്ന മറ്റൊരു ട്രെയിനിനെ 1 മിനിറ്റുകൊണ്ട് മറികടക്കുന്നു. ആദ്യത്തെ ട്രെയിനിന്റെ നീളം 210 മീ. ആയാൽ രണ്ടാമത്തെ ട്രെയിനിന്റെ നീളമെത്ര?