To determine the better buy, we need to find the unit cost in each offer. In other words, we need to know the price of one bagel. To do this, we will divide the price by the number of bagels in each offer. The deal with the lower price per bagel will be the better deal.
\begin{aligned}
\textbf{First deal: } \quad \dfrac {\$3.29}{6 \text{ bagels}} \quad \Rightarrow \quad \dfrac {\$0.55}{1 \text{ bagel}}\\[1em]
\textbf{Second deal: } \quad \dfrac {\$4.15}{8 \text{ bagels}} \quad \Rightarrow \quad \dfrac {\$ 0.52}{1 \text{ bagel}}
\end{aligned}
The second offer presents the better buy, as the unit price is 3 cents lower.
