Train A and train B are travelling towards each other at 48 km/h. In train A, Jane notices that it takes 6 seconds to pass her. Find the length of train B in m.

Peter and Jane competed in a 5000m race. Peter's speed was 4 time that of Jane's. Jane ran from the beginning to the end, whereas Peter stopped running every now and then. When Jane crossed the finish line, Peter was 100m behind. Jane ran a total of X(m) during the time Peter was not running. Find the value of X.