Answer :
To find out how much oil Jack uses in the salad dressing, follow these steps:
1. Understand the Ratio: The salad dressing is made by mixing oil and mayonnaise in the ratio 5:2. This means that for every 5 parts of oil, there are 2 parts of mayonnaise.
2. Calculate Total Parts in the Ratio: Add the parts of the ratio together to find the total number of parts.
[tex]\[
\text{Total parts} = 5 + 2 = 7
\][/tex]
3. Total Volume of Salad Dressing: Jack makes a total of 700 ml of salad dressing.
4. Find the Volume of Oil: The oil makes up 5 parts out of the total 7 parts. To find the volume of oil, we use the formula:
[tex]\[
\text{Volume of oil} = \left(\frac{\text{Oil parts}}{\text{Total parts}}\right) \times \text{Total volume}
\][/tex]
Substitute the known values into the formula:
[tex]\[
\text{Volume of oil} = \left(\frac{5}{7}\right) \times 700
\][/tex]
5. Calculate:
[tex]\[
\text{Volume of oil} = \frac{5 \times 700}{7} = \frac{3500}{7} = 500
\][/tex]
Therefore, Jack uses 500 ml of oil to make the salad dressing.
1. Understand the Ratio: The salad dressing is made by mixing oil and mayonnaise in the ratio 5:2. This means that for every 5 parts of oil, there are 2 parts of mayonnaise.
2. Calculate Total Parts in the Ratio: Add the parts of the ratio together to find the total number of parts.
[tex]\[
\text{Total parts} = 5 + 2 = 7
\][/tex]
3. Total Volume of Salad Dressing: Jack makes a total of 700 ml of salad dressing.
4. Find the Volume of Oil: The oil makes up 5 parts out of the total 7 parts. To find the volume of oil, we use the formula:
[tex]\[
\text{Volume of oil} = \left(\frac{\text{Oil parts}}{\text{Total parts}}\right) \times \text{Total volume}
\][/tex]
Substitute the known values into the formula:
[tex]\[
\text{Volume of oil} = \left(\frac{5}{7}\right) \times 700
\][/tex]
5. Calculate:
[tex]\[
\text{Volume of oil} = \frac{5 \times 700}{7} = \frac{3500}{7} = 500
\][/tex]
Therefore, Jack uses 500 ml of oil to make the salad dressing.
