Question

# In the morning, Marco sold 12 cups of lemonade for $3. By the end of the day, he had earned $9. How many cups of lemonade did he sell in all? Kaycee wrote the proportion 12/3=9/c for this situation identifly the error and give tow ways to write the proportion correctly

Answer

Two ways to write the proportion correctly are: 1. 12/3 = c/9, where c is the total number of cups sold by the end of the day. 2. 3/12 = c/9, where c is the total number of cups sold by the end of the day.

- Q: What is the error in the proportion 12/3=9/c? A: The error in the proportion is that it assumes that each cup of lemonade sold for the same amount of money, which may not be true.
- Q: What are two ways to write the proportion correctly? A: Two ways to write the proportion correctly are: 1. 12/3 = c/9, where c is the total number of cups sold by the end of the day. 2. 3/12 = c/9, where c is the total number of cups sold by the end of the day.