document.write( "Question 831: A swimmer takes 100seconds to swim 50m. In 1 years time he has increased it's speed by 25%. Wat is the time he took to swim 50m now. \n" ); document.write( "
Algebra.Com's Answer #297 by usyim88hk(158)![]() ![]() ![]() You can put this solution on YOUR website! First, find out the speed he was last year: \n" ); document.write( "50meters/100seconds = 0.5m/s \n" ); document.write( "Then find out the speed of him now: \n" ); document.write( " (0.5m/s)((1+0.25)/1) \n" ); document.write( "=(0.5m/s)(5/4) \n" ); document.write( "=(0.625m/s) \n" ); document.write( "So now we can find the speed of the swimmer now \n" ); document.write( " (50m)/(0.625m/s) \n" ); document.write( "=80sec \n" ); document.write( "So now he swim 50 meters for 80 seconds \n" ); document.write( " |