The question we need to answer is: How many apples does Doreen need for 12 pies?
Let's break this down step by step.
Step 1: Determine the number of apples needed for one pie.
Doreen uses 13 apples for every 2 pies that she bakes. So, to find out how many apples are needed for one pie, we divide the total number of apples by the number of pies:
[tex]\[ \text{Apples per pie} = \frac{13 \text{ apples}}{2 \text{ pies}} = 6.5 \text{ apples per pie} \][/tex]
Step 2: Determine how many pies Doreen is making.
According to the problem, Doreen is making 12 pies.
Step 3: Calculate the total number of apples needed for 12 pies.
We know Doreen uses 6.5 apples per pie. Therefore, for 12 pies, the total number of apples needed is:
[tex]\[ \text{Apples needed} = 6.5 \text{ apples per pie} \times 12 \text{ pies} \][/tex]
Step 4: Calculate the final result.
[tex]\[ \text{Apples needed} = 6.5 \times 12 = 78.0 \][/tex]
So, Doreen will need 78 apples to bake 12 pies.