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Q.

Add 20hr 34min 8sec and 8hr 48min 35sec.


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a

20hr 34 min 8 sec

b

28hr 82min 43sec

c

8hr 48 min 35sec

d

None of these 

answer is B.

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Detailed Solution

Concept- We simply add the given times. If the minute part is greater than 60min, we will divide that by 60 and change it into hour and min. Then we will add that hour and minute with the answer and we will get our final answer.
Consider the given question.
20 hr 34 min 8 sec & 8 hr 48 min 35 sec
=20 hr 34 min 8 sec+8 hr 48 min 35 sec
=28 hr 82 min 43 sec
Hence, the Correct option is 2.
 
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