3 b. A taxi hurries 261 km in 135 minutes. What is its average speed in kilometers per hour?

Taxi goes 261 km in 135 minutes.
We need speed in KM/HR
The distance is given in Km, but the time is NOT in hours. We convert minutes to hours as shown below:
[tex]135\min \times\frac{1hr}{60\min }=\frac{135}{60}hr=2.25hr[/tex]Now, we can use Distance Formula to solve for the speed:
D = RT
Where
D is distance [given as 261 km]
R is speed [what we want to find]
T is time [2.25 hours]
Thus,
[tex]\begin{gathered} D=RT \\ 261=R(2.25) \\ R=\frac{261}{2.25} \\ R=116\frac{\operatorname{km}}{hr} \end{gathered}[/tex]Average Speed = 116 kilometers per hour