If you wanted to write a word problem about how much money the fourth-grade class collected at their bake sale, what information would you need to include?

You would have to say how many items they sold and how much each item cost.
For example:
John's class sold 50 items, 25 cakes and 25 muffins. Each cake cost $5 and each muffin cost $3. How much did John's class make?
(Answer is $200) 

You need to show the graph