Answer:
A medium milkshake will use 
 of a pint of milk.
 of a pint of milk.
Explanation:
Given:
A large chocolate milkshake takes = 
 of a pint of milk
 of a pint of milk
While a medium chocolate takes = 
 the amount of milk for a large milkshake.
 the amount of milk for a large milkshake.
To find the amount of milk required for a medium milkshakes.
Solution:
The amount of milk required for a medium milkshakes is given as:
⇒ 
 of the amount of milk for a large milkshake.
 of the amount of milk for a large milkshake.
Plugging in the amount of milk for a large milkshake.
⇒ 
 of
 of 

by 
 we mean multiplication.
 we mean multiplication.
⇒ 

⇒ 

Thus, a medium milkshake will use 
 of a pint of milk
 of a pint of milk