Woody = 1.5 years = 18 months

Ivanka = 18 + 3 = <<18+3=21>>21 months

18 + 21 = <<18+21=39>>39 months

It took Ivanka and Woody 39 months to write their books.

# Answer

39
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Ivanka wrote a book that took her 3 more months than it took Woody to write a book. Woody spent 1.5 years writing his book. How many months in total did Ivanka and Woody need to write their books?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
39
Ivanka wrote a book that took her 3 more months than it took Woody to write a book. Woody spent 1.5 years writing his book. How many months in total did Ivanka and Woody need to write their books?
train