Question 1198255
.


If to follow the doctor's recommendations literally,  it will take at least


                    {{{(240-186)/3}}} = 18 weeks.


<U>ANSWER</U>.  &nbsp;&nbsp;18 weeks or more.



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MathLover1 came with the idea to improve my solution by making it longer,
but instead she gave &nbsp;WRONG &nbsp;ANSWER.


The process loosing weight will take &nbsp;AT &nbsp;LEAST &nbsp;18 &nbsp;weeks - 
not necessary and/or precisely &nbsp;18 &nbsp;weeks, &nbsp;as @MathLover1 states in her answer.



So be aware and ignore her solution, &nbsp;for your safety.