A fraction is written in terms of two parts: the number on top is called the numerator and the number on the bottom is called the denominator. We can use the division method to solve this question. To get a decimal, simply divide the numerator 149 by the denominator 40:
149 (numerator) ÷ 40 (denominator) = 3.73
As a result, you get 3.73 as your answer when you convert 3 29/40 (or 149/40) to a decimal.