Two trains of length 110 m and 85 m are moving in the same direction at 12 m/s and 7 m/s, respectively. Find the time (in seconds) taken by the faster train to cross the slower train.
A.29
B.19
C.39✓ Correct
D.35
Explanation
Relative speed = 12−7 = 5 m/s. Total distance = 110+85 = 195 m. Time = 195/5 = 39 seconds.
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