Math
posted by Anonymous .
Jessica can jog to work in of an hour. When she rides her bike, it takes her of an hour. If she rides miles per hour faster than she jogs, how far away is her work?

Proof your posts, please.

Mary runs 5 kilometers in 0.5 hour and rides her bike 20 kilometers in 0.8 hour. At this rate, how many kilometers can she ride her bike in one hour