document.write( "Question 251775: When Elvis swims with the current, he swims 18km in 2 hours. Against the current, he can swim only 14km in the same time. How fast can Elvis swim in still water and what is the rate of the current? \n" ); document.write( "
Algebra.Com's Answer #183447 by richwmiller(17219)\"\" \"About 
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d*2=18 km
\n" ); document.write( "u*2=14 km
\n" ); document.write( "d=9
\n" ); document.write( "u=7
\n" ); document.write( "9-7=2
\n" ); document.write( "2/2=1
\n" ); document.write( "Current is 1 kmph
\n" ); document.write( "Elvis can swim 8 kmph in still water
\n" ); document.write( "(8+1)*2=18
\n" ); document.write( "9*2=18
\n" ); document.write( "(8-1)*2=14
\n" ); document.write( "7*2=14\r
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