document.write( "Question 160640: Jones can run around a 400-meter track in 65 seconds. How long does Smith take to run the 400 meters if he meets Jones in 35 seconds after they start together in a race around the track in opposite directions?
\n" ); document.write( "Not sure how to set up the equation for this problem. \n" ); document.write( "
Algebra.Com's Answer #118460 by ankor@dixie-net.com(22740)\"\" \"About 
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Jones can run around a 400-meter track in 65 seconds. How long does Smith take
\n" ); document.write( " to run the 400 meters if he meets Jones in 35 seconds after they start together
\n" ); document.write( " in a race around the track in opposite directions?
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\n" ); document.write( "When they meet, they will have traveled a total of 400 meters in 35 seconds
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\n" ); document.write( "Find Jone's speed in meters/sec: \"400%2F65\" = 6.154 m/sec
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\n" ); document.write( "Let s = Smith's speed in m/sec
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\n" ); document.write( "Write a dist equation; Dist = time * speed
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\n" ); document.write( "35s + 35(6.154) = 400
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\n" ); document.write( "35s + 215.39 = 400
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\n" ); document.write( "35s = 400 - 215.39
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\n" ); document.write( "35s = 184.61
\n" ); document.write( "s = \"184.61%2F35\"
\n" ); document.write( "s = 5.275 m/sec is Smith's speed
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\n" ); document.write( "Find time for Smith to run 400 m:
\n" ); document.write( "\"400%2F5.275\" = 75.83 sec to run 400 m
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\n" ); document.write( "Check solution:
\n" ); document.write( "35 * 5.275 = 184.625 m
\n" ); document.write( "35 * 6.154 = 215.39
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\n" ); document.write( "Total dist = 400.0 \n" ); document.write( "
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