Question

Two trains each 250 m in length are running on the same parallel lines in opposite directions with the speed of 80 kmph and 70 kmph respectively. In what time will they cross each other completely​

Answer 1

D = 250 m + 250 m = 500 m

RS = 80 + 70 = 150 * 5/18 = 125/3

T = 500 * 3/125 = 12 sec

Answer 2

Answer:

T. Distance=250×2=500

T. Speed=80+70=150

in m/sec=150×5/18=125/3

Time=500×3/125=12 sec

Step-by-step explanation:

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