An actor read alound and recorded a certain 420-page book on several audiotapes. Was the average recording time per page

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An actor read alound and recorded a certain 420-page book on several audiotapes. Was the average recording time per page less than 90 seconds?

(1) Each tape was at most 40 minutes.
(2) The book was recorded on 15 tapes.

Answer: C

Source: GMAT Prep
Source: — Data Sufficiency |