Question

Add the following.
$20$ hr $34$ min $8$ sec and $8$ hr $48$ min $35$ sec

Answer 1

Consider the given question.

$20hr34min8\sec \&8hr48min35\sec$

$=20hr34min8\sec +8hr48min35\sec$

$=28hr82min43\sec$

Hence, this is the answer.