Question

4. 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

Answer:

time = 12 seconds

Step-by-step explanation:

D = 250 m + 250 m = 500 m

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

T = 500 * 3/125 = 12 sec