Final answer:
Without Joshua's travel speed, we cannot calculate his arrival time for dinner. The example with Maria demonstrates how to add time durations to a starting time to find an arrival time. With Joshua's speed, we would follow the same process to determine his arrival time. The correct option is c.
Step-by-step explanation:
To determine what time Joshua will arrive at his mom's place for dinner, we first need the speed at which he is traveling. Since the problem does not provide this information, we cannot conclusively answer the question. However, using a similar example of Maria's errands:
Example 2.1.11.1 shows how to add and subtract measures of time. Maria leaves her house at 1:00 pm and spends a total time of 15 minutes at the post office, 1 hour and 25 minutes at the mall, and 20 minutes driving to her friend's house. Hence, we add up the total time she spends on her errands:
15 minutes + 1 hour and 25 minutes + 20 minutes, which equals 2 hours. This means Maria will reach her friend's house at 3:00 pm.
If we had Joshua's speed, we would use a similar process to add the travel time to his departure time to find out his arrival time. The correct option is c.