document.write( "Question 1110390: Two trains travel at speeds of 72km/h and 48km/h respectively. If they start at the same time and travel towards each other from two places 600m apart, how long will it be before they meet?
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Algebra.Com's Answer #725372 by ikleyn(52813)\"\" \"About 
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document.write( "72 km/h = 20 m/second.\r\n" );
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document.write( "48 km/h = 15 m/second.\r\n" );
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document.write( "They will meet when they travel  this initial distance of 600 meters between them:\r\n" );
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document.write( "20*t + 15*t = 600,\r\n" );
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document.write( "(20+15)*t = 600,\r\n" );
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document.write( "t = \"600%2F35\" = \"60%2F7\" seconds = 8.5 seconds.\r\n" );
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\n" ); document.write( "See introductory lessons on Travel and Distance problems\r
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\n" ); document.write( "\n" ); document.write( "    - Travel and Distance problems for two bodies moving in opposite directions \r
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\n" ); document.write( "\n" ); document.write( "Read them and learn once for all from these lessons on how to solve simple Travel and Distance problems.\r
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