Answer:
The expression for number of sandwiches is ![n=\frac{3}{4}\div\frac{1}{12}](https://tex.z-dn.net/?f=n%3D%5Cfrac%7B3%7D%7B4%7D%5Cdiv%5Cfrac%7B1%7D%7B12%7D)
9 small sandwiches can be made.
Step-by-step explanation:
Given:
Length of party-sized sandwich (l) = 3/4 yard
Length of each small sandwich (s) = 1/12 yard
Now, let the total number of small sandwiches be 'n'.
Now, sum of all the lengths of small sandwiches will be equal to the length of the party-sized sandwiches.
Therefore, framing in equation form, we have:
Length of large sandwich = Length of small sandwich × Total number of small sandwiches.
![l=s\times n\\\\n=\dfrac{l}{s}](https://tex.z-dn.net/?f=l%3Ds%5Ctimes%20n%5C%5C%5C%5Cn%3D%5Cdfrac%7Bl%7D%7Bs%7D)
Now, plug in the given values and solve for 'n'. This gives,
![n=\frac{3}{4}\div \frac{1}{12}\\\\n=\frac{3}{4}\times \frac{12}{1}\\\\n=\frac{36}{4}=9](https://tex.z-dn.net/?f=n%3D%5Cfrac%7B3%7D%7B4%7D%5Cdiv%20%5Cfrac%7B1%7D%7B12%7D%5C%5C%5C%5Cn%3D%5Cfrac%7B3%7D%7B4%7D%5Ctimes%20%5Cfrac%7B12%7D%7B1%7D%5C%5C%5C%5Cn%3D%5Cfrac%7B36%7D%7B4%7D%3D9)
Therefore, 9 small sandwiches can be made.