Dinner at Pepe's

Cynthia, Annie, and Suz went to Pepe's Pizza Palace for dinner after band practice. They shared a large pizza and each girl ordered a soda. When the bill came, they talked about how to split it up fairly.

"Annie, you had three slices and a medium soda so you should pay one-third of the bill," said Suz.

"Well, I'll chip in a dollar more than that," replied Annie. "And since you only had two slices and also ordered a small soda, you should only pay 20% of the bill."

"That seems fair," said Cynthia. "I ate three slices and had a large soda, so I should pay the most. I'll pay the remaining $8.80."

How much was the total bill for the pizza and the three sodas, and how much did each girl pay?

Extra: At Pepe's, a medium soda costs 25 cents more than a small, and a large soda costs 25 cents more than a medium. The cost of the sodas made up one-seventh of the total bill.

Figure out the actual cost of each girl's meal. Who's estimated cost was the closest to her actual cost?