Question
Two trains approach each other at 21 kmph and 25 kmph
from 2 places 230 km apart. After how many hours they will meet?Solution
Distance = 230 km Speed of train 1 = 21 km/hr Speed of train 2 = 25 km/hr Relative speed = 21 + 25 = 46 km/hr Therefore, speed = distance/time ⇒ 46 = 230/Time ⇒ Time = 230/46 = 5 hrs
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