Can someone please help with this problem. It seems straight forward but the answer in the text is different from the answer I got.
If 0.5 mL of a mumps virus vaccine contains 5000 units of antigen, how many units would be present in each milliliter if the 0.5 mL of vaccine was diluted to 2 mL with water for injection?
I tried setting up like this. [0.5] = [x]. = 1250 units