Anna sold 36 glasses of plain lemonade for $0.75 each. If she made $16 total from selling strawberry lemonade, how much more did she make from plain lemonade than strawberry? Think carefully first, then make a decision:
First find Anna's total earnings from the plain lemonade: 36 glasses * $0.75 / glass = $27. Then subtract her earnings from the strawberry lemonade to find the difference: $27 - $16 = $11. So, the answer is 11.