Answer:
Her unit rate is less than that of Terrance but more than that of Jesse.
Step-by-step explanation:
Since,
[tex]\text{Rate of travelling}=\frac{\text{ Distance}}{\text{Time}}[/tex]
For sandra,
Distance = 8 miles, time = 45 minutes = [tex]\frac{45}{60}[/tex] = 0.75 hours,
( ∵ 1 hour = 60 minutes )
Thus, the unit rate of Sandra = [tex]\frac{8}{0.75}\approx 10.67\text{ miles per hour}[/tex]
For Terrance,
Distance = 6 miles, time = [tex]\frac{1}{2}[/tex] hour = 0.5 hour,
Thus, the unit rate of Terrance = [tex]\frac{6}{0.5}\approx 12\text{ miles per hour}[/tex]
For Jesse,
Distance = 2 miles, time = 15 minutes = [tex]\frac{15}{60}[/tex] hour = 0.25 hour,
Thus, the unit rate of Jesse = [tex]\frac{2}{0.25}\approx 8\text{ miles per hour}[/tex]
Hence, Sandra's unit rate is less than that of Terrance but more than that of Jesse.
