Answer:
1/4 cup of oil for every 1 cup of water
Explanation:
Lets take a look at the information given in the question
The recipe requires 1/8 cup of oil for every 1/2 cup of water.
We know that 1/2 + 1/2 is 1/1, or just 1 simplified
So if we are doubling the amount of water in the recipe, we have to do the same to the oil.
1/8 + 1/8 = 2/8, or 1/4 simplified
So the answer is 1/4 cup of oil to every 1 cup of water