Answer:
it's B
Step-by-step explanation:
by analyzing it I figured it was 100% B
Answer:
Ok, the solution to the first one. See below.
Step-by-step explanation:

See attachment below.
Best Regards!
Answer:
I put all the steps down. I don't know which one you want. I hope you understand it now.
Step-by-step explanation:
b = baking time
p = preperation time
p = 1/3b
12 = 1/3b
b = 12*3
b = 36 minutes