Answer:

7 hr. 12 min. 07 sec.

Step-by-step explanation:

Verified answer

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• 3 hours 12 minutes 24 seconds and 6 hours 47 minutes 39 seconds.

Adding like terms

3 + 6 hours

12 + 47 minutes

24 and 39 seconds

We get

9 hours

59 minutes

63 seconds

Therefore , 9 hours 59 minutes 63 seconds is the answer

Hope it helps uhh !!!

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