Answer:
It will take <u>6 weeks</u> for the carpenter to have total of 23 chairs.
Step-by-step explanation:
Given:
A carpenter makes custom chairs.
He currently has 11 chairs in his showroom.
If he can build 2 chairs each week.
Now, to find the weeks it will take him to have a total of 23 chairs.
So, the carpenter has already 11 chairs in his showroom.
And, he need to have total 23 chairs.
So, the chair remains to build is:
![23-11=12.](https://tex.z-dn.net/?f=23-11%3D12.)
<u><em>Thus, 12 chairs remain to build by the carpenter.</em></u>
<u><em>As, the carpenter can build 2 chairs each week.</em></u>
Now, to get the number of weeks it will take him to build 12 chairs we divide 12 by 2:
![12\div 2\\\\=6\ weeks.](https://tex.z-dn.net/?f=12%5Cdiv%202%5C%5C%5C%5C%3D6%5C%20weeks.)
Therefore, it will take 6 weeks for the carpenter to have total of 23 chairs.