kay. first, you can eliminate extra info which is the fact that there were two people. Lay out your givens:
distance = 400 metres
time = 4 hrs = 14 400 seconds
average speed = ???
The question fully says: what was the AVERAGE SPEAD in meters per second of the LAST PART of their climb?
meaning...
They are haploid during prophase 2 and metaphase 2.
Remember that the result of meiosis 1 is two genetically different haploid cells, which then divide during meiosis 2 to result in four different haploid cells.
Meiosis 1 is nuclear reduction; after telophase 1 the cells are officially haploid...