Answer:
120%
Step-by-step explanation:
Given that,
The diameter of the raw cookie is 2 1/2 inches i.e. 5/2 inches
After baking the cookie, the diameter is 5 1/2 inches i.e. 11/2inches
We need to find by what factor does the cookie expand.
[tex]x=\dfrac{5\dfrac{1}{2}-2\dfrac{1}{2}}{2\dfrac{1}{2}}\times 100\\\\=\dfrac{\dfrac{11}{2}-\dfrac{5}{2}}{\dfrac{5}{2}}\times 100\\\\=120\%[/tex]
So, the cookie will expand 120%.
