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)![]() ![]() ![]() You can put this solution on YOUR website! 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. \n" ); document.write( "--- \n" ); document.write( "The LCM (18, 36, 9) = 36 \n" ); document.write( "9*4 = 36 \n" ); document.write( "4*30 = 120 \n" ); document.write( "-- \n" ); document.write( "So, gear C turns 120 revolutions / min. \n" ); document.write( " |