I need help I keep getting the wrong answer !

Question

The volume of 1 unit of plasma is 200.0 mL. If the recommended dosage for adult patients is 10.0 mL per kg of body mass, how many units are needed for a patient with a body mass of 80.0 kg ?

Answer 1

Mathematically it goes like this:

Logically, it goes like this:

If 10 mL is required for every 1 kg and the patient is 80 kg, then 10•80 mL is required (that's 800 mL). And since there are 200 mL in 1 unit, then it takes 4 units to make 800 mL.

Answer 2

So you want to look at the kg to kg and ml to ml then divide for units