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)\"\" \"About 
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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
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