I hope this helps you! it's relatively straightforward but if you need more explanations, don't hesitate to ask!
Answer:
$388.50
Step-by-step explanation:
42 tins
$9.25/tin

So, they raised $388.50
Hey there! I'm happy to help!
How many times does 20 go into 48?
48/20=2.4
So, we multiply our amount of flour for 20 cookies by 2.4.
2.25×2.4=5.4
Therefore you would need 5.4 or 5 2/5 cups of flour to make 48 cookies.
Have a wonderful day! :D
It makes the addition easier if you combine like terms like the two 1/2s and then make them all have the denominator of 12 (changing the numerators to equal it out)