Two trains 132m and 108m in length are running towards each other on parallel lines at the rate of 32km/hr and another at 40km/hr.In what time will they be closer to each other from the moment they meet?
Relative speed=32+40=72km/hr=72*(5/18)=20m/s
Total length=132+108=240m
Time=Length/speed=240/20=12
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