Answer:
6.6667 x 10⁷ words
Explanation:
In the decimal system, there are 10⁶ bytes in a megabyte. Thus, the CD-ROM disk can store 600 x 10⁶ bytes of information. If each word requires 9.0 bytes of storage, the number of words that can be stored on one disk is given by:

The disk can store 6.6667 x 10⁷ words or roughly 67 million words.