Jenny's frog made one jump of 2.34 meters. christina's frog made jumps of 1.22 meters and 0.89 meters. how much further did jenny's frog jump in one jump than christina's frog in two jumps combined?

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.