document.write( "Question 633034: An airplane leaves los angeles for Denver at a speed of 450 mph.Thirty min later,a plane going from Denver yo los Angeles leaves Denver,which is 850 miles from los Angeles,at a speed of 520 mph.When they meet, how far are they from Denver? \n" ); document.write( "

Algebra.Com's Answer #398615 by mananth(16946) $\"\"$ $\"About$

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Let them meet at distance x from Denver
\n" ); document.write( "LA to Denver - speed = 450 mph
\n" ); document.write( "Denver to LA = 520 mph ( 30 minutes later)\r
\n" ); document.write( "\n" ); document.write( "Total distance = 850 miles\r
\n" ); document.write( "\n" ); document.write( "d=rt\r
\n" ); document.write( "\n" ); document.write( "When the second plane starts the first plane has already traveled 450*1/2 = 225 miles\r
\n" ); document.write( "\n" ); document.write( "so the distance between them will be 625 miles\r
\n" ); document.write( "\n" ); document.write( "add up their speeds = 520+450 = 970 mph\r
\n" ); document.write( "\n" ); document.write( "time = d/r
\n" ); document.write( "time = 625/970
\n" ); document.write( "= 0.64 hours\r
\n" ); document.write( "\n" ); document.write( "Distance from denver = 0.64*520= 334.8 miles\r
\n" ); document.write( "\n" ); document.write( "m.ananth@hotmail.ca\r
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