Answer: It will take 10 hours.
Step-by-step explanation:
Given: Distance traveled by Ruby in [tex]1\dfrac14[/tex] hours = [tex]\dfrac{1}{8}[/tex] of Total trip.
i.e. Time taken to complete [tex]\dfrac{1}{8}[/tex] of Total trip= [tex]1\dfrac14[/tex] hours
Time taken to cover the total trip = Reciprocal of [tex]\dfrac{1}{8}[/tex] x ([tex]1\dfrac14[/tex] )
[tex]=\dfrac81\times(\dfrac{5}{4})\\\\=2\times5\\\\=10\text{ hours}[/tex]
Therefore , it will take 10 hours to complete the trip.
