The triangle on the right is a scaled copy of the triangle on the left. Identify the scale factor. Express your answer in the simplest form. two sides of the smaller triangle are both 12
one side of the bigger triangle is 14

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.