ANSWER
48 mg
EXPLANATION
We have that the health drink has 120% of the RDA for the vitamin.
We are given that the RDA for the vitamin is 40 mg.
We simply need to find 120% of 40 mg.
That is:
[tex]\begin{gathered} \frac{120}{100}\cdot40 \\ =\text{ 48 mg} \end{gathered}[/tex]There are 48 mg of that vitamin in the drink.