document.write( "Question 993864: Two trains of length 55 metres and 65 metres travel in opposite directions with speed 70 km/hour and 50 km/hour respectively. Find the time taken for them to completely cross one another. \n" ); document.write( "
Algebra.Com's Answer #613129 by ankor@dixie-net.com(22740)\"\" \"About 
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Two trains of length 55 metres and 65 metres travel in opposite directions with speed 70 km/hour and 50 km/hour respectively.
\n" ); document.write( " Find the time taken for them to completely cross one another.
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\n" ); document.write( "The relative speed between the two trains: 70 + 50 = 120 km/hr
\n" ); document.write( "Change 120 km/hr to meters/sec
\n" ); document.write( "\"%28120%2A1000%29%2F3600\" = 33\"1%2F3\" meters per sec
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\n" ); document.write( "Find the no. of seconds to travel 55 + 65 = 120 meters
\n" ); document.write( "\"120%2F33.33\" = 3.6 seconds
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