Correct Answer: Option D
Suppose the trains meet after time ‘t’ from starting.
Distance travelled = Speed × Time
Therefore in t hours train A will travel = 40 × t km
Similarly in t hours train B will travel = 90 × t km
Total Distance = (40 t + 90 t) km = 130 t km
At the time of their meeting, the second train has travelled 100 km more than the first ,
So ,
90 t – 40 t = 100
⇒ 50 t = 100
⇒ t = 2
So the total distance = 130 × 2 = 260 km
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