Answer:
x = 900 mL
Explanation:
The rate of the drug is 3 mg per 100 mL of water. Let's denote the number of milliliters of fluid to be prescribed as x.
We can set up the proportion as follows:
3 mg / 100 mL = 27 mg / x
To solve for x, we can cross-multiply and then divide:
3 mg * x = 27 mg * 100 mL
3x = 2700
x = 2700 / 3
x = 900 mL
Therefore, 900 milliliters of fluid should be prescribed.