Can you me anyone with this answer and i will do in return by marking you as a brainliest answer so plz plz plz me.(remember estimate) and if you're in fifth grade or above and then

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.