document.write( "Question 860454: lola and kim are in a bicycle race, following a circular track. If they start at the same place and travel in the same direction, and lola completes a revolution every 40 seconds and kim completes a revolution every 45 seconds, how long will it take them before they reach the starting point again simultaneously?\r
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document.write( "Do I use the distance formula- P1P2= square root of x-2-x1 to the power of 2 + y2-y2?
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document.write( "I know the solution I am trying to find is x, but where do I go about that? \n" );
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Algebra.Com's Answer #518446 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! lola and kim are in a bicycle race, following a circular track. \n" ); document.write( " If they start at the same place and travel in the same direction, and \n" ); document.write( "lola completes a revolution every 40 seconds and \n" ); document.write( "kim completes a revolution every 45 seconds, \n" ); document.write( " how long will it take them before they reach the starting point again simultaneously? \n" ); document.write( ": \n" ); document.write( "Find the least multiple of 40 and 45, prime factor: \n" ); document.write( "40: 2*2*2*5 \n" ); document.write( "45: 3*3*5 \n" ); document.write( "then 2*2*2*3*3*5 = 360 seconds they will both be at the starting point \n" ); document.write( "360/40 = 9 rev for L \n" ); document.write( "360/45 = 8 rev for K \n" ); document.write( " |