No, that is incorrect. If we were not given the condition in this question that N must make the same amount as another partner, it would be possible for L to make less than H while still following the rules. For example, this is a valid arrangement in which L makes less than H: (most) KIFMGJHLN (least)
Be careful with this setup. We are basically given two chains: (1) K - I - F - M - G - J - H (2) K - L - N
We only know the relationship between variables in the same chain, and K is the single variable in both chains. Therefore, we could put L anywhere after K in the first chain (assuming we keep N after it). This gives us the option of placing LN after H.
Does that make sense? Hope it helps! Please let us know if you have any other questions!