Alexa spent $20 on ingredients and wants to make a profit of $80, so her total revenue needs to be $20 + $80 = $100.
Each cup of lemonade sells for $2, so she needs to sell $100 / $2 = 50 cups of lemonade to make a profit of $80.
#### 50
The answer is: 50
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Alexa has a lemonade stand where she sells lemonade for $2 for one cup. If she spent $20 on ingredients, how many cups of lemonade does she need to sell to make a profit of $80?

### Answer:
