Can someone please help me <3

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

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.

What are the excluded values? m+5/mn+3m