Janice needs twelve and nine over ten. ft of ribbon for her art project. She has a piece of ribbon that is six and one over five ft and another piece of ribbon that is three and three over five ft long. How many more feet of ribbon does she need for her art project?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.