document.write( "Question 775159: I need help setting up this problem:\r
\n" ); document.write( "\n" ); document.write( "At 10:30 am two planes leave Houston, one flying east at 560 km/h and the other flying west at 640 km/h. At what time will they be 2100 km apart?\r
\n" ); document.write( "\n" ); document.write( "I tried making a table, but i don't know where to start at all.\r
\n" ); document.write( "\n" ); document.write( "thanks so much
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Algebra.Com's Answer #472665 by reviewermath(1029)\"\" \"About 
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Q:
\n" ); document.write( "At 10:30 am two planes leave Houston, one flying east at 560 km/h and the other flying west at 640 km/h. At what time will they be 2100 km apart?
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\n" ); document.write( "A:
\n" ); document.write( "Let x be the number of hours after 10:30 am (time)
\n" ); document.write( "Equation: 560x + 640x = 2100
\n" ); document.write( " 1200x = 2100
\n" ); document.write( " x = 2100/1200
\n" ); document.write( " x = 1.75 hours
\n" ); document.write( "1.75 hours = 1 hour and 45 minutes
\n" ); document.write( "10:30 am + 1 hour + 45 minutes = 12:15 pm
\n" ); document.write( "Answer: 12:15 pm
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