Welcome to Westonci.ca, the place where your questions are answered by a community of knowledgeable contributors. Explore a wealth of knowledge from professionals across different disciplines on our comprehensive platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

Lincoln School is raising money for a class trip by setting magazines. The school receives a percentage of each participant's sales based on a 3-tier schedule as follows:
30% for the first $50 of each participant's sales
40% for the next 450 of each participant's sales
50% for all additional sales
Cody participated in the fund-raiser and had magazine sales of $140. How much did Cody earn for school?