Answer:

Step-by-step explanation:
Let x represents the number of glasses of iced tea .
Let y represents the number of glasses of lemonade.
Now we are given that She has only 44 cups in which to serve the drinks
Since y is the number of glasses of lemonade out of 44 glasses
So, remaining glasses = 
So, remaining glasses is for iced tea .
So, No. of iced tea glasses = 
Hence She can serve
number of glasses of iced tea serve.