Question
A train passes two persons who are walking in the
opposite direction of the train at the rates of 4 m/s and 10 m/sec in 10 seconds and 8 seconds respectively. What is the speed of the train?Solution
Speed of persons =4m/s and 10m/s. Time =10sec and 8sec. Let the Speed of the train =x ATQ- D /(4+x) =10             … (1) D/(10+x) =8              … (2) 40+10x =80+8x 2x =40 X =20m/s.
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