Every week , Donald records the amount the mileage that has accumulated on his truck. On Monday , Donald recorded that he had driven 16,450 kilometers. After a week of deliveries , his new recording was 18,130 kilometers . He drove for thirty hours during that week . What was his average driving speed during that week to the nearest kilometer per hour ?

Options

A. 38
B. 41
C. 48
D. 56

Answer

To find Donald's average driving speed during the week, we can follow these steps:

### Step 1: Calculate the total distance driven
To find the total distance driven, we need to subtract the initial mileage from the final mileage.

Initial mileage = 16,450 kilometers
Final mileage = 18,130 kilometers

Total distance = Final mileage - Initial mileage
Total distance = 18,130 km - 16,450 km
Total distance = 1,680 kilometers

### Step 2: Calculate the average driving speed
The average driving speed can be calculated using the formula:

Average speed = Total distance / Total time

We know the total distance is 1,680 kilometers and the total time is 30 hours.

Average speed = 1,680 km / 30 hours
Average speed = 56 kilometers per hour

### Conclusion
Thus, Donald's average driving speed during that week is **56 kilometers per hour**.

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