document.write( "Question 345476: A and B run at constant velocities along a circular track. The circumference of the track is 1320 meters. If they run in opposite directions, they meet every 2 minutes; if they run in the same direction, they are together every 22 minutes. Find their velocities. \n" ); document.write( "
Algebra.Com's Answer #247247 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A and B run at constant velocities along a circular track. \n" ); document.write( " The circumference of the track is 1320 meters. \n" ); document.write( " If they run in opposite directions, they meet every 2 minutes; \n" ); document.write( " if they run in the same direction, they are together every 22 minutes. \n" ); document.write( " Find their velocities. \n" ); document.write( ": \n" ); document.write( "Find the sum of their velocities, \n" ); document.write( "when they meet, they will have traveled a total of 1320 meters in two minutes \n" ); document.write( "Speed = dist/time \n" ); document.write( "(V1 + V2) = \n" ); document.write( "V1 + V2 = 660 m/min \n" ); document.write( ": \n" ); document.write( "When they travel the same directions \n" ); document.write( "V1 - V2 = \n" ); document.write( "V1 - V2 = 60 m/min \n" ); document.write( ": \n" ); document.write( "Use elimination \n" ); document.write( "V1 + V2 = 660 \n" ); document.write( "V1 - V2 = 60 \n" ); document.write( "-----------------addition eliminates V2 \n" ); document.write( "2V1 = 720 \n" ); document.write( "V1 = \n" ); document.write( "V1 = 360 m/sec \n" ); document.write( "and \n" ); document.write( "V2 = 660 - 360 \n" ); document.write( "V2 = 300 m/sec \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "We can confirm this using the same direction scenario \n" ); document.write( "Faster runner travels 22 * 360 = 7920 meters \n" ); document.write( "Slower runner travels 22 * 300 = 6600 meters \n" ); document.write( "---------------------------------------------- \n" ); document.write( "difference is exactly 1 lap or 1320 meters \n" ); document.write( " |