Question

A soultion consist of 80 mg of dopamine of 80 mL of solution is administered at a rate of 6 mL/hr. What is the flow rate in mg of dopamine per hour?

Answer 1

6 or 3mL/hr, probably 3mL/hr

Explanation:

If dopamine makes up half of the solution then you half the total mL/hr to 3. If it is the whole solution then it tells you the answer (6mL/hr). I'm not sure if the question is poorly worded or just how you typed it but it would be easier to answer if it was clearer.