document.write( "Question 261721: A machine has three interlocking gears . Gear A has 18 teeth and turns clockwise at 30 revolutions per minute. Gear B turns counter-clockwise and has 36 teeth. Gear C turns clockwise and has 9 teeth. How many revolutions does gear C turn in one minute ? \n" ); document.write( "
Algebra.Com's Answer #192861 by drk(1908)\"\" \"About 
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Gear A: 18 teeth -> 30 rev / min -> 60 rev / 2 min.
\n" ); document.write( "Gear B: 36 teeth
\n" ); document.write( "Gear C: 9 teeth.
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\n" ); document.write( "The LCM (18, 36, 9) = 36
\n" ); document.write( "9*4 = 36
\n" ); document.write( "4*30 = 120
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\n" ); document.write( "So, gear C turns 120 revolutions / min.
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