We know
![D=RT](https://img.qammunity.org/2023/formulas/mathematics/college/cgvntvbsmdlgndt0acy832tszzuxnaj20y.png)
Where
D is the distance
R is the rate (or speed)
T is the time
We would need to know ANY 2 variables to solve for the 3rd variable.
Since, we want to know the time (T), we MUST somehow know R (rate/speed) and D (distance).
This way, we will be able to solve the problem.