Question

Porter had already read 3 books this year before joining a book club, and he plans to read 1 book every month now that he has joined. If Porter has read 13 books so far how many months has he been with his book club?

Answer 1

13 total books - 3 books before joining the club = 10 books read while in the club.

Each book is equivalent to 1 month, since he planned to read 1 book every month . Therefore Porter has been with his club for 10 months now.