A drug solution with a ratio strength of 16000 contains how

A drug solution with a ratio strength of 1:6000 contains how many milligrams of drug in 40 milliliters? Please show steps

A drug solution has a ratio strength of 1:6000

The drug volume is 40.

Therefore, the quanitiy of drug is ?

6000 parts = 40 mm

So, 1 part = 40/6000 = .0067 mm of drug

So, there are .0067mm parts of drug.