If the door opens a lantern lights up. If the door does not open in the next 15 mins then the lantern goes off. The following is a record of the times when someone opened the door - 8:00,8:03,8:05,8:07,8:11,8:20,8:33,8:54,9:15,10:52.
How much time did the lantern remain off?
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How long was the lantern off
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xcusemeplz2009
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2010gmat
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8:00,8:03,8:05,8:07,8:11,8:20,8:33,8:54,9:15,10:52.
it will first go off at 8:48 and will remain so for next 6 mins
similarly it will remain off from 9:09 to 9:15 and then from 9:30 to 10:52
12 + 82 = 94 mins
it will first go off at 8:48 and will remain so for next 6 mins
similarly it will remain off from 9:09 to 9:15 and then from 9:30 to 10:52
12 + 82 = 94 mins
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xcusemeplz2009
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condition 1 -door opens light on
condition 2 - light off after 15 min
time condition off time
8.00 on 0
8.03 on 0
8.05 on 0
8;07 on 0
8:11 on 0
8:20 on 0
8:33 on 0
8:48-8:54off 6
8:54 on 0
9:09-9:15off 6
9:15 on 0
9:30-9:52off 22
9:52 on 0
total 34 min
OA pls
condition 2 - light off after 15 min
time condition off time
8.00 on 0
8.03 on 0
8.05 on 0
8;07 on 0
8:11 on 0
8:20 on 0
8:33 on 0
8:48-8:54off 6
8:54 on 0
9:09-9:15off 6
9:15 on 0
9:30-9:52off 22
9:52 on 0
total 34 min
OA pls
It does not matter how many times you get knocked down , but how many times you get up
