Question

9. A train 200 m long running at a speed of 30 m/s
crosses a tunnel of length 400 m in sec.
A. 22 B. 42
C. 20
D. 12​

Answer 1

Answer:

c is the answer

Step-by-step explanation:

Answer 2

Answer:

The answer is C

Step-by-step explanation:

I hope this will help you