“If train A is moving at 60 km/h north and train B is headed south at 83mp/h, and both are carrying 3 asdfadsf ”

If train A is moving at 60 km/h north and train B is headed south at 83mp/h, and both are carrying 3 tons of ice, when will the ice melt? Also, draw a diagram if the trains, ice, and angry train conducters please