I attached a file since the last time I tried to just show the pic it didn't go through. I think I start with

P/T=4/5

R/T=2/5

How do I figure out the difference of n amd m?

In the following figure, the similarity ratio of regular hexagonPto regular hexagonTis 4/5 and the similarity ratio of regular hexagonRtoTis 2/5. What is the difference ofnandm?