Subtraction of Time

Fill in the blanks :
The duration from $9:30$ am and $3:20$ pm is_____hours and minutes.

Time interval between $6:25 \mathrm{am}$ and $5:26 \mathrm{pm}$ is _____.(Input the time in the $\mathrm{x} \mathrm{hr} \mathrm{y} \mathrm{minute}$ format).

Time $6$ hours $29$ minutes after $4:30$ pm is  _____ pm. (Input the answer in the format $\mathrm{HH}:\mathrm{MM}$)

Subtract :

$8$ hours $46$ minutes from $16$ hours $21$ minutes.

Subtract :

$9$ days $19$ hours from $11$ days $48$ hours

Add:

$59$ hours $45$ minutes and $68$ hours $20$ minutes