Stream of consciousness rationale: To make a profit of $80, she needs to make $80 + $20 = $100. She needs to sell $100 / $2 = 50 cups of lemonade.
The question and answer pair are described below.
Q: 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?
A: 50