Jim has three times as many comic books as charles. Charles has 2/3 as many books as Bob. Bob has 27 books how many book does Jim have.

Bob has 27 books.

Charles has 2/3 as many books as Bob:

[tex] \dfrac{2}{3} \times 27 = 18[/tex]

Charles has 18 books.

Jim has 3 times as many books as Charles:

18 x 3 = 54

Jim has 54 books.

[tex]\boxed {\boxed {\text {Answer: Jim has 54 books. }}}[/tex]