"The average age at which people died of heart disease are decreasing."

Can I use "is" in place of "are" ?

  • The averaeg age... is..., not are. The average age is one specific age. See usage exemples here: google.com/…
    – user 66974
    Nov 5, 2018 at 13:53

1 Answer 1


"Age" alone is strictly singular. "Average" alone is an adjective.

"average age" will be pertaining to one particular thing, or in this case, a number that is the average of a set of ages at which people died of heart disease.

So since the "average age" pertains to a single number, then it should be followed by a singular verb such as is.

  • yes, 'age' is a countable noun
    – lbf
    Nov 5, 2018 at 16:01

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