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?

STEP BY STEP ANSWER don't use me for points
Kaycee wrote the proportion 12/3= 9/c Identify the error and give two ways to write the proportion correctly.

Answer 1

Sample response: Kaycee did not keep lemonade and dollars in corresponding positions in the ratios of the proportion. The proportion should be 12/3=c/9 or it could be written 3/12=9/c. Dollars should be in the same position and cups should be in the same position across ratios.

Explanation:

I hope this helps!

Answer 2

2

Explanation:

only made $9 so one cup is $3 so two cups equal $9