There are 39 employees in a bank, who work in three shifts. The first group of 15 employees work from 10:00 AM to 01:00 PM. The second group of 5 employees work from 12:00 PM to 03:00 PM. The third group of 19 employees work from 01:00 PM to 03:00 PM. If there are only 4 computers, during what time are the computers likely to be used most?
A train travelling at the speed of 50 kmph leaves the station at 2 PM. Another train leaves the station at 4 PM. If the second train travels at a speed of 90 kmph, then at what time will it catch up to the first train?