Final answer:
The formula D = r * t can be rearranged to solve for time by dividing both sides by the rate, resulting in t = D / r. Therefore, the correct answer is A. t = D / r.
Step-by-step explanation:
Solving the Distance Formula for Time
The distance formula is expressed as D = r * t, where D stands for distance, r is the rate or speed, and t is the time. To solve for time t, we can rearrange the formula to isolate t on one side. The steps to do this are:
- Start with the original formula: D = r * t.
- Divide both sides of the equation by r to get t on its own: t = D / r.
Therefore, the correct answer is A. t = D / r.