Answer:
6/1/2hours
Step-by-step explanation:
[tex]speed =80miles \: per \: hour \: distance \: = 520miles \\ speed = \frac{distance}{time} \\ 80 = \frac{520}{t} \\ 80t = 520 \\ t = \frac{520}{80} \\ t = 6 \frac{1}{2} hours \\ [/tex]
hope that this is helpful.
