Google is now bolding the answers in the search results area when quick answers are displayed at the top of the page, in the knowledge graph box area.
For example, a search for airline pilot salary shows figures bolded, even though the query didn’t mention that number:-
Or a search for [the average age of a college student] bolds 25:
This was spotted by Wissam Dandan and posted on Google+.
Google has long bolded your search query and even synonymous of your query but the answers, that seems new.Google Is Bolding Answers in Search Results!,