While booking a bus ticket, Arpan tells Sita the
hour of his bus departure and he tells Gita at
which minute it leaves.
Sita & Gita know that the following services are
available on that day: 06:32, 06:43,06:50, 07:17
07:46, 08:19, 08:32, 09:17, 09:19, 09:50 (All in the
morning)
Sita then says "I don't know the exact bus
timings, but I am sure that neither does Gita".
Gita Replies "I didn't know the exact bus time
before, but now I do
Sita responds "If Gita knows it now, then I also
know !
When is Arpan's bus leaving?
please help
Answers
Given : Bus timing , Arpan tell hour to Sita and minute to gita
To find : When is Arpan's bus leaving
Solution:
Hours Minutes
6 32 43 50
7 17 46
8 19 32
9 17 19 50
Site says "I don't know the exact bus timings, but I am sure that neither does Gita".
Ofcourse sita does not know bus timing as Sita knows hr only and each hr has more than one minute
But Sita is sure Gita Does not know the time this mean hour known to Sita
does not have unique time like 6 : 43 or 7 : 46 where only minutes are sufficient to know bus timing
hence hours can not be 6 or 7
so we are left with 8 & 9 hour only
Gita Did not knew this thing before but now gita knows that bus timing is 8 or 9 hour
it can not be 8: 19 or 9 : 19 as then Gita could not know exact time
so we are left with timings 8 : 32 , 9 : 17 & 9 : 50
Sita now also know timing this mean hour known to her can not be 9 as then she would not have known exact time
Hence Arpan Bus Leaves at 8:32
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