Question

PLEASE HELP 5 STAR + BRAINLY IF RIGHT!

Answer 1

Right your ratio of $\frac{8}{12}$
Simplify fraction to 3/4
Now set it up with c/100 to find the percent (c equaling the percentage of caremel brownies)

Cross multiplty:
$\frac{2}{3} \frac{c}{100}$

Crossmultiply:
3c = 200
Divide (solve equation)

c = 66.6666666667

Answer 2

Total brownies 20         100% would be 20 brownies

   40% caramel brownies(8)     60% walnut brownies(12)

8 brownies:

100/20=x/8

20x=800(8*100)

x=800/20

x=40         40%

12 brownies:

100/20=x/12

20x=1200 (12*100)

20=1200/20=60   60%