Quick question will give the brainliest away. "Jack spent 15 hours practicing his saxophone last week. He spent 3 10 of that time doing warm-up routines. How many total hours did Jack spend on warm-up routines last week?" Please shpw your work and put the answer in fraction form. PLZ I AM BEGGING YOU>

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?