Answer:
[tex]\frac{2}{7}[/tex] of the chocolates are plain.
[tex]\frac{5}{7}[/tex] of the chocolates are milk.
Step-by-step explanation:
The ratio of plain chocolates to milk chocolates is 2:5
This means that for each 2+5 = 7 chocolates, 2 are plain and 5 are milk.
So [tex]\frac{2}{7}[/tex] of the chocolates are plain.
And [tex]\frac{5}{7}[/tex] of the chocolates are milk.