Erins water bottle holds 600 milliliters of water.. dylans water bottle holds 1 liter of water. whose water bottle has the greater capacity? how much greater

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.