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21 Sep 2009, 12:51
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Q.
A wall clock gains 2 mins in 12 hrs, while a table clock loses 2 mins in 36 hrs; both are set right at noon on Tuesday.The correct time when they both show the same time next would be
a. 12.30 night
b. 12 noon
c. 1.30 night
d. 12 night
A wall clock gains 2 mins in 12 hrs, while a table clock loses 2 mins in 36 hrs; both are set right at noon on Tuesday.The correct time when they both show the same time next would be
a. 12.30 night
b. 12 noon
c. 1.30 night
d. 12 night
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22 Sep 2009, 13:04
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got A – 12.30 night
My logic was: Minutes - distance, hours - time
So: wall clock speed: 2/12 or 1/6, table - 2/36 or 1/18.
Total distance they travel towards each other is limited by 60 min.
Need to know the number time to travel for each. 1/6x + 1/18x = 60 2/9x=60 x=540/2 x=270 Now divide 270 by 24 =>11,5 days, so 12.30 at night Not sure 100% in it though, so comments are appreciated
My logic was: Minutes - distance, hours - time
So: wall clock speed: 2/12 or 1/6, table - 2/36 or 1/18.
Total distance they travel towards each other is limited by 60 min.
Need to know the number time to travel for each. 1/6x + 1/18x = 60 2/9x=60 x=540/2 x=270 Now divide 270 by 24 =>11,5 days, so 12.30 at night Not sure 100% in it though, so comments are appreciated
24 Sep 2009, 04:13
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According to me
The wall clock gains 6 mins in 36 hrs;
The table clock loses 2 mins in 36hrs;
therefore, the time differential in 36 hrs = 8 mins..for the clocks to show same time time differential has to be 12 hrs
after 3240 hrs they will give time differential 12 hrs; and as 3240 is perfectly divisible by 24...ans is 12 noon
The wall clock gains 6 mins in 36 hrs;
The table clock loses 2 mins in 36hrs;
therefore, the time differential in 36 hrs = 8 mins..for the clocks to show same time time differential has to be 12 hrs
after 3240 hrs they will give time differential 12 hrs; and as 3240 is perfectly divisible by 24...ans is 12 noon
arkadiyua
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