Orange juice clams that 200ml of their product contains 2.5 times the average daily allowance of Vitamin C. Calculate the average daily allowance of vitamin c (in mg) if the orange juice contains 0.040% (w/v) of vitamin C.

Answer 1

0.04% means 0.04g/100 mL (w/v) so in 200 mL that is 0.08g or 80 mg.
So 2.5*X = 80
X = ?

Answer 2

32