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To find the time taken for Pablo to bike 81 m,iles at a speed of 9 mph, we will use the formula below:
[tex]\text{speed=}\frac{dis\tan ce}{\text{time}}[/tex]From the question, speed = 9 distance=81
substitute the values into the formula and then solve for time
[tex]9=\frac{81}{\text{t}}[/tex]Cross-multiply
[tex]9t\text{ = 81}[/tex]Divide both-side of the equation by 9
[tex]t=9\text{hours}[/tex]