document.write( "Question 354809: Mary and Nick left from the same place at the same time and drove in opposite directions along a straight road. Mar3 traveled 15 miles faster than Nick. After three hours, they were 315 miles apart. Find the rate at which each traveled. \n" ); document.write( "
Algebra.Com's Answer #253480 by stanbon(75887)\"\" \"About 
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Mary and Nick left from the same place at the same time and drove in opposite directions along a straight road. Mary traveled 15 miles faster than Nick. After three hours, they were 315 miles apart. Find the rate at which each traveled.
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\n" ); document.write( "Let Mark rate be x mph
\n" ); document.write( "Then Mary rate is x+15 mph
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\n" ); document.write( "They are separating at a rate of 2x+15 mph
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\n" ); document.write( "Equation:
\n" ); document.write( "distance = rate*time
\n" ); document.write( "315 = (2x+15)*3
\n" ); document.write( "105 = 2x+15
\n" ); document.write( "2x = 90
\n" ); document.write( "x = 45 mph (Mark's rate)
\n" ); document.write( "x+15 = 60 mph (Mary's rate)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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