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|Author:||questioner [ Sun Dec 11, 2011 5:21 pm ]|
|Post subject:||GMAT Logic|
If the time is currently 1:30 pm, what time will it be in exactly 647 hours?
A. 12:30 am
B. 1:30 am
C. 12:30 pm
D. 2:30 pm
E. 10:30 pm
(C) If we divide 647 by 24, not arriving at a decimal, but rather keeping the answer in terms of an integer and the remainder, this number will represent the number of days and hours later that 647 hours is:
647/24 = 26, remainder 23.
Therefore, 647 hours from now is the same as 26 days and 23 hours from now.
The time will be exactly 1 hour earlier in the day, so it will be 12:30 pm.
The correct answer is choice (C).
It is currently 1:30 pm, which is the same time as 13:30 am. Add 23 hours and one gets 12:30am. Answer A.
|Author:||Gennadiy [ Sun Dec 11, 2011 5:27 pm ]|
|Post subject:||Re: t.2, qt.20: logic, arithmetics|
It is currently 1:30 pm, which is the same time as 13:30 am. Add 23 hours and one gets 12:30am. Answer A.If you convert the question into 24-hour clock system, it will be:
If the time is currently 13:30, what time will it be in exactly 647 hours?
One hour before 13:30 is 12:30 (which is the same as 23 hours after 13:30). The correct answer is C.
Note, the 24-hour clock system does not have "am" and "pm" abbreviations.
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