Question

Bobby uses a recipe for bathroom cleaner that is 1 part hydrogen peroxide to 1/4 part baking soda. If Bobby uses 3 cups of peroxide, how much baking soda does he use?

A. 1/4 cup
B. 1 cup
C. 3/4 cup
D. 2/3 cup

Answer 1

Bobby would need 3/4 cup of baking soda to use with 3 cups of peroxide, based on the given ratio of 1 part peroxide to 1/4 part baking soda. The answer is determined by multiplying the amount of peroxide by the ratio of baking soda to peroxide.

Step-by-step explanation:

The student is asking how much baking soda Bobby should use if he is using 3 cups of peroxide, given the recipe ratio of 1 part hydrogen peroxide to 1/4 part baking soda. Since the recipe calls for 1 part of hydrogen peroxide to be combined with 1/4 part of baking soda, you simply multiply the amount of hydrogen peroxide used by the ratio of baking soda to peroxide to find the amount of baking soda needed.

Here is the step by step calculation:

1. Let's write down the ratio: 1 part hydrogen peroxide : 1/4 part baking soda.
2. Bobby uses 3 cups of hydrogen peroxide.
3. To find the amount of baking soda, multiply 3 cups of peroxide by 1/4.
4. 3 cups × 1/4 = 3/4 cups of baking soda.

Therefore, the correct answer is C. 3/4 cup of baking soda.