Question

Two trains A and B moving in the same direction at 60 kmph and 80 kmph respectively. Find the time in which B crosses A if the length of the two trains is 80 m. Assume that train B is just behind train A at the start.

• A. 19.2 s
• B. 24 s
• C. 21.6 s
• D. 28.8 s
• E. None of these

Answer 1

The correct option is E

None of these

Let the distance covered by the slower train be `x'

$\frac{x}{216}=\frac{x+160}{288}$

x = 480 m

Time = 2.2 s