document.write( "Question 233210: The amount of time it takes a swimmer to swim a race varies inversely as the average speed of the swimmer. A swimmer finishes a race in 400 seconds with an average speed of 3 feet per second. Find the average speed of the swimmer if it takes 300 seconds to finish the race. \r
\n" );
document.write( "\n" );
document.write( "How do I get the answer? \n" );
document.write( "
Algebra.Com's Answer #172133 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! The amount of time it takes a swimmer to swim a race varies inversely as the average speed of the swimmer. \n" ); document.write( "A swimmer finishes a race in 400 seconds with an average speed of 3 feet per second. \n" ); document.write( "Find the average speed of the swimmer if it takes 300 seconds to finish the race. \n" ); document.write( ": \n" ); document.write( "you can use an inverted ratio equation: let s = speed of the faster swimmer \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "which is \n" ); document.write( " \n" ); document.write( "cross mult \n" ); document.write( "3s = 4*3 \n" ); document.write( "3s = 12 \n" ); document.write( "s = \n" ); document.write( "s = 4 ft/sec is the faster swimmers speed \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Prove that to yourself. \n" ); document.write( "the dist for both should be the same: \n" ); document.write( "400 * 3 = 1200 ft \n" ); document.write( "300 * 4 = 1200 ft \n" ); document.write( " \n" ); document.write( " |