Question

Add
3hours 30 minute 15 seconds and 9 hours 15 minutes 12 seconds
​

Answer 1

Answer:

the sum is 12 hours 45 minutes 27 sec

Answer 2

Answer : 14 hours 5 minutes 27 seconds

Step-by-step explanation:

3 hours = 3 (60 x 60 seconds) = 3600 seconds

30 min = 30 (60 seconds) = 1800 seconds

and

9 hours = 9 (60 x 60 seconds) = 10800 seconds

15 min = 15 (60 seconds) = 900 seconds

Therefore, 3 hours 30 minutes 15 seconds equals to 3600 + 1800 + 15 = 5415 seconds.

and 9 hours 15 minutes 12 seconds equals to

10800 + 900 + 12 = 11712 seconds.

Thus, Sum of the given two durations is :

5415 + 11712 = 17127 = 1200(14) + 327

= 1200(14) + 60(5) + 27

= 14 hours 5 min 27 seconds