document.write( "Question 365984: An airplane flying at a rate of 500 miles per hour leaves Los Angeles. One-half hour later, a second airplane leaves Los Angeles in the same direction flying at a rate of 600 miles per hour. How long will it take the second airplane to overtake the first?\r
\n" ); document.write( "\n" ); document.write( "Plane 1 distance 750miles in 90 minutes\r
\n" ); document.write( "\n" ); document.write( "Plane 2 distance 600 miles in 60 minutes\r
\n" ); document.write( "\n" ); document.write( "formula: 750 = 60 x t\r
\n" ); document.write( "\n" ); document.write( "Am I using the right formula?\r
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Algebra.Com's Answer #260810 by Alan3354(69443)\"\" \"About 
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An airplane flying at a rate of 500 miles per hour leaves Los Angeles. One-half hour later, a second airplane leaves Los Angeles in the same direction flying at a rate of 600 miles per hour. How long will it take the second airplane to overtake the first?\r
\n" ); document.write( "\n" ); document.write( "Plane 1 distance 750miles in 90 minutes\r
\n" ); document.write( "\n" ); document.write( "Plane 2 distance 600 miles in 60 minutes\r
\n" ); document.write( "\n" ); document.write( "formula: 750 = 60 x t\r
\n" ); document.write( "\n" ); document.write( "Am I using the right formula?
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\n" ); document.write( "That gets t = 12.5 hours, which is not right.
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\n" ); document.write( "Do it like this:
\n" ); document.write( "The 1st plane is 250 miles away when the 2nd starts (500 * 0.5)
\n" ); document.write( "The 2nd plane gains on it at 100 mph (600 - 500)
\n" ); document.write( "250/100 = 2.5 hours
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