A man is mixing sugar and water for his bird feeder. He uses 1/3 of a teaspoon of sugar for 1/2 cup of water. what is the unit rate of sugar per cup of water? how much sugar will he need to mix into 12 cups of water? Show your work

1 answer

To find the unit rate of sugar per cup of water, we can set up a proportion:

1/3 teaspoon of sugar / 1/2 cup of water = x teaspoon of sugar / 1 cup of water

To cross multiply, we get:

1/3 * 1 = x * 1/2

x = 1/6 teaspoon of sugar per cup of water

To find how much sugar he will need to mix into 12 cups of water, we can set up another proportion:

1/6 teaspoon of sugar / 1 cup of water = x teaspoon of sugar / 12 cups of water

To cross multiply, we get:

1/6 * 12 = x * 1

x = 2 teaspoons of sugar

Therefore, he will need to mix 2 teaspoons of sugar into 12 cups of water.