Warren is a window cleaner. Ho cleaned Millie's windows and she paid him $10 in cash. What kind of transaction is this? Purchase of goods by Warren Purchase of a service by Millie Sale of goods by Warren Sale of a service by Mille Warren is a wndow cleaner. He cleaned Millie's windows and she paid him $10 in cash What kind of transaction is this? Purchase of goods by Warren Purchase of a service by Millie Sale of goods by Warren Sale of a service by Millie Warren is a window cleaner. He cleaned Millie's windows and she paid him $10 in cash What kind of transaction is this? Purchase of goods by Warren Purchase of a service by Millie Sale of goods by Warren Sale of a service by Millie Warren is a window cleaner. He cleaned Mille's windows and she paid him $10 in cash. What kind of transaction is this? Purchase of goods by Warten Purchase of a service by Millie Sale of goods by Warren Sale of a service by Millie