How much of a total of 500ml mouthwash recipe does 52ml of erythromycin ethyl succinate contribute?

To determine how much 52 ml of erythromycin ethyl succinate contributes to a total mouthwash recipe of 500 ml, you would calculate the percentage using the formula:

[

\text{Percentage} = \left(\frac{\text{part}}{\text{whole}}\right) \times 100

]

In this scenario, the part is 52 ml (the erythromycin ethyl succinate) and the whole is 500 ml (the total volume of the mouthwash). Plugging the values into the formula gives:

[

\text{Percentage} = \left(\frac{52 , \text{ml}}{500 , \text{ml}}\right) \times 100

]

Calculating this:

1. First, divide 52 by 500:

[

\frac{52}{500} = 0.104

]

2. Then, multiply by 100 to convert the decimal into a percentage:

[

0.104 \times 100 = 10.4%

]

When rounded, this value can be understood as approximately 10%, which aligns with the choice indicating that erythromycin ethyl succinate contributes