Final answer:
Option D is the correct option. In solving distance, rate, and time problems, using a consistent formula and accurately converting all units are crucial steps, followed by checking if the final answer is reasonable.
Step-by-step explanation:
In solving distance, rate, and time problems, it is essential to use a consistent formula or equation for each problem. This approach ensures that all units and values are used correctly and that the final answer makes sense in the context of the question.
For example, using the basic formula distance = rate × time, first substitute the given values for distance and time to find the rate or vice versa as needed.
Then, if the problem includes different units, such as kilometers and meters or hours and seconds, ensure that you correctly convert all units so they match.
Keep in mind, conversion factors like 1 km = 1000 m and 1 hour = 3600 seconds are crucial for the correct transformation of units. Lastly, checking whether the answer is reasonable is an integral step in considering if the calculated values make sense based on the context provided.