Q: Two trains are moving at 45kmph 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) 40/6 sec\n(B) 43/6 sec\n(C) 47/6 sec\n(D) 40/3 sec\n(E) 40/7 sec Let's give some random thoughts before answering.
User
70 + 45 = 115 * 5/18 = 575/18 mps\nD = 150 + 100 = 250 m\nT = 250 * 18/575 = 15/2 = 47/6 se
Therefore, the answer is (C).
Assistant