A pizza restaurant has a toddler play area with a ball pit. The ball pit has 1000 red balls, 500 green balls, and 100 yellow balls ffa ball is randomly picked from the pit, what is the probability it is yellow? A. 1/100 B. 1/16 C. 1/15 D. 1/10

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.