document.write( "Question 655087: during a race john has 40 second lead over mary.
\n" ); document.write( "john runs at a speed of 1.15 meters per second, and mary runs at a speed of 2 meters per second. how long will it take mary to overtake john?
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Algebra.Com's Answer #408934 by lwsshak3(11628)\"\" \"About 
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during a race john has 40 second lead over mary.
\n" ); document.write( "john runs at a speed of 1.15 meters per second, and mary runs at a speed of 2 meters per second. how long will it take mary to overtake john?
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\n" ); document.write( "let x=mary's travel time
\n" ); document.write( "x+40=john's travel time
\n" ); document.write( "..
\n" ); document.write( "distance=travel time*speed (same for both)
\n" ); document.write( "1.15(x+40)=2x
\n" ); document.write( "1.15x+46=2x
\n" ); document.write( ".85x=46
\n" ); document.write( "x≈54.1
\n" ); document.write( "how long it will take mary to overtake john≈54.1 sec
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