Question
Mathematics Question on Problem on Trains
A train running at 90 km/h crosses a 400 m long another train running towards it on parallel tracks at 80 km/h in 18 seconds. How much time will it take to pass a 450 m long tunnel?
A
28 seconds
B
32 seconds
C
34 seconds
D
36 seconds
Answer
36 seconds
Explanation
Solution
The correct option is (D):36 seconds