Final answer:
For every 3 cups of light soy sauce, there are 2 cups of dark soy sauce.
Step-by-step explanation:
To find out how many cups of dark soy sauce there are for each cup of light soy sauce, we can use the given ratio. The ratio is 2 cups of dark soy sauce to 3 cups of light soy sauce. This means that for every 3 cups of light soy sauce, there are 2 cups of dark soy sauce.