Answer:
Robyn will use [tex]2\dfrac {1}{2}[/tex] of blueberries to make 5 loaves of bread.
Step-by-step explanation:
Note: It is always a good practice to bring the given quantity to one single unit and then multiply with the quantity that is asked for.
Robyn uses [tex]\dfrac {1}{2}[/tex] cup of blueberries to make 1 loaf of bread.
So she will use 1 cup of blueberries to make 2 loaves of bread.
Multiplying throughout by [tex]2\dfrac {1}{2}[/tex] we get that
She will use [tex]2\dfrac {1}{2}[/tex] cup of blueberries to make [tex]2\times 2\dfrac {1}{2}[/tex] loaves of bread.
Now, we will convert mixed fraction to improper fraction.
So, [tex]2\times 2\dfrac {1}{2}=2\times \left( 2+\dfrac {1}{2}\right)[/tex] [tex]=2\times \dfrac {5}{2} = 5[/tex].
Therefore, Robyn will use [tex]2\dfrac {1}{2}[/tex] cup of blueberries to make 5 loaves of bread.