Shelby bought a 2-ounce tube of blue paint. She used 2 over 3 ounce to paint the water, 3 over 5 ounce to paint the sky, and some to paint a flag. After that, she has 2 over 15 ounce left. How much paint did Shelby use to paint her flag?

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?