Answer: The required simplified fraction is
Step-by-step explanation: We are given that in a grocery store there are 4 self-checkout lines and 8 lines with cashiers.
We are to find the ratio of the number of lines with cashiers to the number of self-checkout lines.
Let n represents the number of lines with cashier and m represents the number of self-checkout lines.
Then, we have
n = 8 and m = 4.
Therefore, the required ratio of the number of lines with cashiers to the number of self-checkout lines is given by
![\dfrac{n}{m}=\dfrac{8}{4}=\dfrac{2}{1}.](https://tex.z-dn.net/?f=%5Cdfrac%7Bn%7D%7Bm%7D%3D%5Cdfrac%7B8%7D%7B4%7D%3D%5Cdfrac%7B2%7D%7B1%7D.)
Thus, the required simplified fraction is