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The table below shows the price of rolls at a bakery. A baker's dozen includes 13 rolls for the price of a dozen rolls. How much money is saved by buying a baker's dozen instead of 13 individual rolls?

\begin{tabular}{|c|c|c|c|}
\hline
Number of rolls & 6 & 8 & Baker's dozen \\
\hline
Price (\[tex]$) & \$[/tex]3.60 & \[tex]$4.80 & \$[/tex]7.20 \\
\hline
\end{tabular}

A. \[tex]$0.55
B. \$[/tex]0.60
C. \[tex]$0.70
D. \$[/tex]0.75


Sagot :

Sure, let's break down this problem step-by-step.

### Step 1: Determine the price per roll when buying in sets of 8 rolls.
The price for 8 rolls is [tex]$4.80. To find the price per roll: \[ \text{Price per roll} = \frac{4.80}{8} = 0.60 \, \text{dollars per roll} \] ### Step 2: Calculate the total cost for 13 individual rolls. Since we know the price per roll is $[/tex]0.60 from Step 1, the total cost for 13 rolls is:
[tex]\[ \text{Total cost for 13 individual rolls} = 13 \times 0.60 = 7.80 \, \text{dollars} \][/tex]

### Step 3: Identify the cost of a baker's dozen.
A baker's dozen (which is 13 rolls) is given directly as [tex]$7.20 in the table. ### Step 4: Calculate the savings. We need to find the difference between the cost of 13 individual rolls and the cost of a baker's dozen: \[ \text{Savings} = \text{Total cost for 13 individual rolls} - \text{Cost of a baker's dozen} \] \[ \text{Savings} = 7.80 - 7.20 = 0.60 \, \text{dollars} \] Thus, by buying a baker's dozen instead of 13 individual rolls, you save $[/tex]0.60.

### Answer:
[tex]\[ \$0.60 \][/tex]

Therefore, the correct answer is $0.60.