Answer:
Given the statement: At the malt shop a large chocolate shake takes 8/9 of a pint of milk
⇒ Amount of large chocolate shake=
pint of milk.
It is also given that: if the medium shake takes 1/7 the amount of a large.
⇒

Substitute the given values we have;

Simplify:
pint of a milk
Therefore, the medium shake take
pint of a milk.