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Solving Ratio, Proportion, and Percent Story Problems: Tutorial

Doreen uses 13 apples for every 2 pies she bakes. How many apples will she use for 12 pies?

1. Decide what the question is.

What question do you need to answer?

A. How many pies will Doreen bake?
B. How many apples does Doreen need for 12 pies?
C. How many apples are in 1 pound?



Answer :

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.

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