document.write( "Question 925332: two trains of length 150 m and 180 m respectively are running in opposite direction on parallel track of their speed be 30 km/h and 24 km/hr respectively in what time will be they cross each other \n" ); document.write( "
Algebra.Com's Answer #561448 by TimothyLamb(4379)\"\" \"About 
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combined length = 150 + 180 = 330 m = 0.33 km
\n" ); document.write( "relative speed = 30 + 24 = 54 kph
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\n" ); document.write( "s = d/t
\n" ); document.write( "t = d/s
\n" ); document.write( "---
\n" ); document.write( "t = 0.33/54
\n" ); document.write( "t = 0.00611111111111 hours
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\n" ); document.write( "answer:
\n" ); document.write( "0.00611111111111 hours * 60*60 seconds/hour
\n" ); document.write( "22 seconds
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