Question
Two trains start at the same time for two station A and B toward B and A respectively. If the distance between A and B is 220 km and their speeds are 50 km/hr and 60 km/hr respectively then after how much time will they meet each other?
Answer: Option A
$$\eqalign{
& {\text{Relative speed}} \cr
& {\text{ = 60 + 50}} \cr
& {\text{ = 110 km/h}} \cr
& {\text{Time taken}} \cr
& {\text{ = }}\frac{{220}}{{110}} \cr
& {\text{ = 2 hr}} \cr} $$
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$$\eqalign{
& {\text{Relative speed}} \cr
& {\text{ = 60 + 50}} \cr
& {\text{ = 110 km/h}} \cr
& {\text{Time taken}} \cr
& {\text{ = }}\frac{{220}}{{110}} \cr
& {\text{ = 2 hr}} \cr} $$
Was this answer helpful ?
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