Question

A train one mile long travels at 30 mph. It enters a tunnel one mile long at 4pm. At what time does the end of the train emerge from the tunnel.

Answer 1

r*t = d
The rear end of the train travels 1 mile to enter the 1 mile long tunnel and another mile to exit the tunnel.
30*t=2
t=2/30 hour = 4/60 hour = 4 minutes.
The clock will indicate 4:04 PM when the train emerges from the tunnel.

Answer 2

Thank you for the medal.

Answer 3

Your welcome and thanks for the answer.