Some question: Two trains are moving at 60 kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is?\nOptions:\n(A) 6 12/13 sec\n(B) 7 1/7 sec\n(C) 7 2/2 sec\n(D) 8 1/2 sec\n(E) 7 1/9 sec
Some stream of consciousness:
User
70 + 60 = 130 * 5/18 = 325/9 mps\nD = 150 + 100 = 250 m\nT = 250 * 9/325 = 90/13 = 6 12/13 sec The answer: (A).
Assistant