Question

1/6 2/6 3/6 4/6 what is the difference between the time and shortest time students spent riding the bus?

Answer 1

1/6 I must assume of an hour is 10 Minutes
2/6 is 20 Minutes 

etc.

Answer 2

It'd be 3/6 or 1/2. If this is of a hour it'd be 30 minutes.