document.write( "Question 632705: Problem: One day I was at school,the electricity went out at home. when I left for swim practice that morning,all the clocks were working and the time was 6:30am.When I returned home they all said different times. the wind -up clock,which was unaffected by the loss of electricity,have a time of 5:21pm. my math clock, which stops when the electricity is off and runs when the electricity is on, gave a time of 3:50 pm. My digital clock, which resets to midnight when the power goes off and continues to run from that point,have a flashing time of 6:03 am. Assuming the electricity went out only once, what time did it go out and for how long?\r
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Algebra.Com's Answer #398445 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
The 3 clocks each are a piece of the puzzle.
\n" ); document.write( "(1)
\n" ); document.write( "The wind-up clock gives the true time when
\n" ); document.write( "you returned home which was 5:21 PM.
\n" ); document.write( "(2)
\n" ); document.write( "The math clock, if you subtract if you
\n" ); document.write( "subtract whatever it says from 5:21 PM,
\n" ); document.write( "will give you the duration of the power loss.
\n" ); document.write( "(3)
\n" ); document.write( "The digital clock will tell you when the power
\n" ); document.write( "loss started by subtracting it's time from 5:21
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\n" ); document.write( "First, I look at the digital clock and subtract
\n" ); document.write( "6 hrs and 3 min from 5:21. That would be 42
\n" ); document.write( "min before 12, or 11:18 as the start of the power loss
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\n" ); document.write( "Then, looking at the math clock, 5:21 minus 3:50
\n" ); document.write( "is 1 hr and 31 min. That is the time elapsed during
\n" ); document.write( "the power loss.
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\n" ); document.write( "Also, the power came back on at 11:18 + 1 hr 30 min
\n" ); document.write( "or 12:48 PM.
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\n" ); document.write( "To check this, the 3 time periods, before, during, and after
\n" ); document.write( "should add up to 5:21 PM - 6:30 AM = 10 hrs 51 min
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\n" ); document.write( "Before the loss:
\n" ); document.write( "11:18 AM - 6:30 AM = 4 hrs 48 min
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\n" ); document.write( "Duration of the loss:
\n" ); document.write( "1 hr 31 min
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\n" ); document.write( "After the loss:
\n" ); document.write( "5:21 PM - 12:48 PM = 4 hrs 33 min
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\n" ); document.write( "\"+4+%2B+1+%2B+4+=+9+\" hr
\n" ); document.write( "\"+48+%2B+31+%2B+33+=+112+\" min
\n" ); document.write( "\"+112+=+60+%2B+52+\" min
\n" ); document.write( "\"+1+\" hr \"+52+\" min
\n" ); document.write( "This adds up to 10 hrs 52 min
\n" ); document.write( "I'm 1 min over. There must be a slight
\n" ); document.write( "mistake, but I think my method is OK \n" ); document.write( "
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