Distance = 3000+120m = 3120m = 3120/1000km = 3.12km Time = 2 minutes = 2/60h =1.

Reference: wzeto

Why are there so many "simultaneous votes" when 002 is wrong?

Step 1. Train length+queue length =120m+3000m = 3120mstep2. Average train speed = (3120/2) x11000 km x 60/h.