Question
Two trains for Mumbai leave Delhi at 6 a.m. and 6:30
a.m. and travel at 100 km/h and 136 km/h respectively. Approx. how many km from Delhi will the two trains be together?Solution
Since the faster train left Delhi in 30 minutes after the slower train Distance traveled by the slower train in 0.5hours = 0.5 × 100 = 50 km … {30 minutes = (30/60) 0.5hours} The relative speed of given two trains while. travelling in the same direction = 136 -100 = 36km/h time after which they meet =50/36 = 1.38 approx. travel distance = 1.38 ×136 = 188km
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