document.write( "Question 642599: a light flashes every 2 minutes, a second light flashes every 3.5 minutes and a third light flashes every 4 minutes. If all three flash together at 8 pm, at what time will they flash together again? \n" ); document.write( "
Algebra.Com's Answer #404171 by lwsshak3(11628)\"\" \"About 
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a light flashes every 2 minutes, a second light flashes every 3.5 minutes and a third light flashes every 4 minutes. If all three flash together at 8 pm, at what time will they flash together again?
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\n" ); document.write( "1/2+1/3.5+1/4
\n" ); document.write( "LCD:28
\n" ); document.write( "Time they will flash together again: 8:28 pm
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