When Mara started jogging from her home, Opal was 0.5 km ahead. Mara jogged at 12 km/h and Opal jogged at 10 km/h. They went in the same direction and did not change their speeds throughout.
- How far did Mara jog in 30 minutes?
- Who was ahead after 30 minutes? How far apart were they? Give your answers in this format. (Eg Ben, 1.2 km)