Answer:
what?
Step-by-step explanation:
68 - 14 = 54, 54/6 = 9 hours
Well think the answer is x = 14/9 but I don't think there is a full number for this equation.
Answer:
5 m/min
Step-by-step explanation:
Initial speed = 6 m/ min
Final speedd = 4 m/ min

Average speed = 
Avg. Speed = 5 m / min.