High School

A cleaning spray contains [tex]\frac{1}{2}[/tex] cup of vinegar for every 4 teaspoons of lemon oil.

1. How many cups of vinegar are needed for 2 teaspoons of lemon oil?
- [tex]\frac{1}{4}[/tex] cup of vinegar for 2 teaspoons of lemon oil.

2. What is the rate in cups of vinegar per teaspoon of lemon oil?
- [tex]\square[/tex] cup of vinegar per teaspoon of lemon oil.

Answer :

Let's start by analyzing the given information and calculating the needed values:

1. Understanding the Ratio Provided:
You have a cleaning spray that contains [tex]\( \frac{1}{2} \)[/tex] cup of vinegar for every 4 teaspoons of lemon oil. This is our initial ratio.

2. Finding the Unit Rate:
To find the rate in cups of vinegar per teaspoon of lemon oil, you divide the amount of vinegar by the amount of lemon oil. Thus, you have:

[tex]\[
\text{Rate of vinegar per teaspoon of lemon oil} = \frac{1/2}{4}
\][/tex]

Simplifying this fraction:

[tex]\[
\frac{1/2}{4} = \frac{1}{2} \times \frac{1}{4} = \frac{1}{8}
\][/tex]

This means that the rate is [tex]\( \frac{1}{8} \)[/tex] cup of vinegar per teaspoon of lemon oil.

3. Calculating the Vinegar Needed for 2 Teaspoons of Lemon Oil:
Now that we know the rate, we want to find out how many cups of vinegar are needed for 2 teaspoons of lemon oil.

You simply multiply the rate by the number of teaspoons:

[tex]\[
\text{Vinegar for 2 teaspoons} = \frac{1}{8} \times 2 = \frac{2}{8} = \frac{1}{4}
\][/tex]

Therefore, [tex]\( \frac{1}{4} \)[/tex] cup of vinegar is needed for 2 teaspoons of lemon oil.

Conclusion:
The rate in cups of vinegar per teaspoon of lemon oil is [tex]\( \frac{1}{8} \)[/tex] cup per teaspoon. For 2 teaspoons of lemon oil, you will need [tex]\( \frac{1}{4} \)[/tex] cup of vinegar.