Ok so how I get taught to do this is you need to know the basics of algebra if you know that then respond and I’ll tell you how to solve that
$42.29
Multiply $35.24 by .2 and add that to the original bill.
The answer is: 4.5 cups.
The explanation is shown below:
1. You need 3 cups of milk to make 30 biscuits.
2. Therefore, to solve the exercise you only need to multiply 45 biscuits by 3 cups and divide this by 30 biscuits.
3. Let's call the cups you will need to make 45 biscuits
. Then, you have:

4. Therefore, you will need 4.5 cups to make 45 biscuits.
Answer:
28.57142857
%
Step-by-step explanation:
Convert the fraction to a decimal, then multiply by 100
.
28.57142857
%