Question

two trains a and b,120 m and 180 m long are moving along parallel tracks with speeds 80 km/hr and 90 km/hr respectively. how long will train a take to overtake train b​

Answer 1

Step-by-step explanation:

Time taken by trains to cross each other in oppo. direction

=l1+l2relativespeedinoppo.direction

=(180+120)65+55=300120×518

= 9 second

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