Question

Change to 12-hours clock time.
(a) 1640 hrs (b) 0540 hrs
(e) 1900 hrs (f) 0748 hrs​

Answer 1

Final answer: (a) 04:40 PM,  (b) 05:40 AM,   (e) 07:00 PM,   (f) 07:48 AM

Given that: We are given (a) 16:40 hrs, (b) 05:40 hrs, (e) 19:00 hrs,

(f) 07:48 hrs​

To find: We have to find  12-hours clock time corresponding to (a) 16:40 hrs, (b) 05:40 hrs, (e) 19:00 hrs, (f) 07:48 hrs​

Explanation:

• Following the steps are considered for converting given time to 12-hrs format.

Step 1: Identify the given time is greater than or lesser than or equal to  12hrs.

Step 2 (I): If it is greater than 12, then subtract 12 hrs from hour part and put minutes portion back in. Just add PM to the converted time.

         (II): If it is less than or equal to 12, no change is required. Just add AM to that time.

(a) 16:40 hrs

• 16:40 hrs is greater than 12hrs.

• Subtract 12 from hour portion: 16 – 12 = 4

• Put minutes portion (40) back in: 04:40

• Add PM: 04:40 PM

(b) 05:40 hrs

• 05:40 hrs is less than 12hrs.

• So just add AM : 05:40 AM

(e) 19:00 hrs

• 19:00 hrs is greater than 12hrs

• Subtract 12 from hour portion: 19 – 12 = 7

• Put minutes portion (00) back in: 07:00

• Add PM: 07:00 PM

(f) 07:48 hrs

• 07:48 hrs is less than 12hrs

• So just add AM : 07:48 AM

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