To add 5 days 16 hours and 7 days 8 hours, follow these steps:

1. Add the days: $5 + 7 = 12 \text{ days}$

2. Add the hours: $16 + 8 = 24 \text{ hours}$

Since 24 hours equals 1 day:

• Convert 24 hours to 1 day and add it to the total days.

3. Final calculation: $12 \text{ days} + 1 \text{ day} = 13 \text{ days}$

Total: 13 days

Would you like further clarification or have any additional questions?

Related Questions:

1. How do you convert hours into days for larger numbers?
2. Can this method be applied to months and years?
3. How would you add durations that include minutes and seconds?
4. How can you subtract two time durations accurately?
5. What is the process for converting durations into weeks and days?

Tip: Always group similar units (hours, days, etc.) and convert to the next unit when exceeding the threshold (e.g., 24 hours = 1 day).