Answer:
It takes 12 tablespoons of butter to make 42 cupcakes.
Step-by-step explanation:
This is a proportions problem.
Butter/Cupcakes is [tex]\frac{8}{28}[/tex] or [tex]\frac{2}{7}[/tex] simplified. This means there are 2 table spoons of better to every 7 cupcakes.
To solve for 42 cupcakes, set
[tex]\frac{2}{7} =\frac{x}{42}[/tex] Next, Cross multiply so that 2 is multiplied by 42 and 7 by x.
[tex]7x=84[/tex] Divide to isolate x
[tex]x=12[/tex]
Since x represents the amount of butter, you would need 12 tablespoons of butter to make 42 cupcakes.
