It’s a website where a listing is updated only once in a hundred hours. But when a user activates paid features, his listing can be updated ten times faster meaning once in ten hours.

Which is the correct version to state such a thing?

1 Answer 1


The best is “…can be updated once every 10 hours.” The preposition “in” isn’t necessary if you use “every”. You can use in if you want to add a noun, such as “period”: …can be updated once in every 10 hour period.

Using “in” “Once in 10 hours” Example sentence: He was supposed to call me every hour. But he was lazy. He called me once in 10 hours! “in 10 hours” Example sentences: I will be finished in 10 hours. He left Boston and arrived in Pittsburgh in 10 hours.


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