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.
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