Subject: mathqa
Question: johnny travels a total of one hour to and from school . on the way there he jogs at 6 miles per hour and on the return trip he gets picked up by the bus and returns home at 20 miles per hour . how far is it to the school ?
Option: 
A: 2 miles
B: 10 miles
C: 9.2 miles
D: 4 miles
Answer: C