Answer:
The answer is 128 ice cubes.
Step-by-step explanation:
In order to determine the answer, we have to know about rates.
A rate is just a fraction that describes the relation between two measures.
In this case, we have the measure "ice cubes" and the measure "glasses".
The rate is :

Then, we always have to fulfil this rate. So, for 32 glasses, we need:
x=amount of ice cubes

Finally, there are 128 ice cubes for 32 glasses.