A scientist mixes water (containing no salt) with a solution that contains 40% salt. She wants to obtain 240 ounces of a mixture that is 5% salt. How many ounces of water and how many ounces of the 40% salt solution should she use. Water: ___ ounces

Salt solution: ___ ounces

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?