2 chocolate chip: 3 sugar So, this is the ratio.
The sum of this is 5 but we need it to be 20, because there are 20 cookies.
Let's try multiplying 4 to each side:
4 * 2 chocolate chip : 4 * 3 sugar
8 chocolate chip: 12 sugar
8 + 12 = 20
So, you have 12 sugar cookies.
Final Answer: 12 sugar cookies