Microbial genetics problem solving

These problems aren't making sense, please help.

You do a conjugation experiment in which you mate Hfr leu- , strr , ampr , purr, and F- leu+, strs, amps, purs. In all cases resistance is dominant. Strr is closest to the fertility factor. When plated on minimal media containing the supplements listed below you obtain the following data:

strr ampr purr 500 colonies
strr ampr purs 0 colonies
strr amps purr 200 colonies
strr amps purs 10 colonies

If a map unit is equal to 1% recombination then what are the map distances?



You are mapping the bacterial genome of a strain of E. coli. You set up the following cross. Hfr ampr, his+, pro+, purs, thr+, trp- and F- amps, his-, pro-, purr, thr-, trp+. Thr is closes to the fertility factor. You plate these cells on minimal media with supplements. After one hour you interrupt the mating and obtain colonies with the following genotypes.

amps, his+, pro+, purs, thr-, trp- 647 colonies
ampr, his+, pro+, purs, thr-, trp- 102 colonies
amps, his-, pro+, purr, thr-, trp+ 1000 colonies
ampr, his+, pro+, purs, thr+, trp- 0 colonies
amps, his+, pro+, purr, thr-,trp+ 875 colonies
amps, his+, pro+, purr, thr-, trp- 802 colonies

What is the gene order and how did you determine this order?