A train starts from Pune at a speed of 60 km/h. What time will it take to reach a station 135 km away from Pune ?
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let t (time be in hrs) be time for which train travelled for before meeting at a point.
one train covered 20 km more before meeting at point than other. It would be obvious that 60km/hr train will covered more. So, in time t distance covered by train A is 60t km and second will cover 40t km. now accrd to que. 60t=40t+20 , solving we get t=1 hr.
now, distance b/w station is 60t+40t
so,60+40 =100km.
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