document.write( "Question 641695: A clock rings a bell every 10 min. Another clock rings a bell every 15 min. How frequently will the clocks ring together? \n" ); document.write( "
Algebra.Com's Answer #403761 by lynnlo(4176)\"\" \"About 
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every 30 minutes
\n" ); document.write( "because 10+10+10=30
\n" ); document.write( " 15+15= 30
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