Q11: 3. \( 10 \mathrm{pm}-4.15 \mathrm{pm} \) 4.15 \( \mathrm{pm}-3.10 \mathrm{pm}=\quad \) hrs \( \quad \mathrm{mins} \)

To calculate the time differences, we can break it down step by step. ### 1. Calculate \( 10 \mathrm{pm} - 4.15 \mathrm{pm} \) - Start time: 10:00 PM - End time: 4:15 PM To find the difference, we can convert both times to a 24-hour format: - 10:00 PM = 22:00 - 4:15 PM = 16:15 Now, subtract: \[ 22:00 - 16:15 \] To do this, we can break it down: - From 22:00 to 16:00 is 6 hours. - From 16:00 to 16:15 is 15 minutes. So, the total time difference is: \[ 6 \text{ hours} + 15 \text{ minutes} = 6 \text{ hours } 45 \text{ minutes} \] ### 2. Calculate \( 4.15 \mathrm{pm} - 3.10 \mathrm{pm} \) - Start time: 4:15 PM - End time: 3:10 PM Again, convert to 24-hour format: - 4:15 PM = 16:15 - 3:10 PM = 15:10 Now, subtract: \[ 16:15 - 15:10 \] To do this: - From 16:15 to 15:15 is 1 hour. - From 15:15 to 15:10 is 5 minutes back. So, the total time difference is: \[ 1 \text{ hour} - 5 \text{ minutes} = 55 \text{ minutes} \] ### Summary of Results 1. \( 10 \mathrm{pm} - 4.15 \mathrm{pm} = 6 \text{ hours } 45 \text{ minutes} \) 2. \( 4.15 \mathrm{pm} - 3.10 \mathrm{pm} = 55 \text{ minutes} \)