Do not pay attention to density of keywords Densiry comes from people who design seo softwares and sell them out Titel is very important and mentioned keywords once at least
Forget about keyword density. There is no magic number. Just don't overdo it (i.e avoid keyword stuffing).
If the word or phrase is repeated too often Google can place a filter to reduce the site's rankings or simply ban the site. Keyword density can be tricky but, as a general rule, shoots for 1% to 6% of all text on a page to be our targeted keywords. Ultimately you must write for the reader not the search engine. Be sure the keywords flow naturally.