The best method to use is multiplication to find out what the answer should be:
For every 1/3 cup of water, Sophie needs to use 2 cups of flour. We need to find out how many cups of flour they need per cup of water. As the fraction says 1/3, it shows us that 1/3 needs to be multiplied by 3:
3(1 / 3) = ?
3 / 3 = ?
3 / 3 = 1
As we multiplied the fraction by 3, we need to multiply the amount of floor by 3 as well to ensure the data is accurate:
2 x 3 = 6
Therefore, Sophie needs to use 6 cups of flour per cup of water.
