Which of the following combinations shows the same ratio of vinegar to water

Question

Zachary is making a recipe that requires 1 cup of vinegar and 3 cups of water

Answer 1

2 cups of vinegar to 6 cups of water is in the same ratio:  1:3.

Answer 2

The ratio is set at a constant 1:3 meaning that if the 1 becomes 1/3, then the 3 must become 1 in order to still be the ration of 1:3. This is true because dividing both 1 and 3 by the number 3 will give you 1/3 and 1 respectively. Simply put, divide both numbers by the [x] to find a ratio that works from your multiple choice.