How Long to Write a Book?

Question:

Hi there! I an a fan of the Alice books. I read many of them and every time I go to the library, the books I look for first are the Alice books. My name is Annie and I am currently in year 4. We have book boxes and mine are sometimes full of Alice books that it is so heavy to carry! I am just wondering: how long does it take for you to write one book? If you can answer my question, it will be great. Bye!

Phyllis replied:

It usually took me about six months to write an Alice book.  I already knew the characters and the setting, so that was a big help.  Other books take six months to a year–sometimes several years, depending how long they are and how complicated the plot or the amount of research I need to do first.