document.write( "Question 901201: A plane left the airport at 3 P.M., flying west at the rate of 250 mph. At 3:30 P.M., another plane left the airport flying west at 300 mph. At what time did the second plane overtake the first plane? \n" ); document.write( "
Algebra.Com's Answer #546591 by josgarithmetic(39620)\"\" \"About 
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This solution analysis will use time quantities instead of points in time.
\n" ); document.write( "Thirty minutes means half hour.\r
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\n" ); document.write( "\n" ); document.write( "____________________speed____________time___________distance
\n" ); document.write( "EARLY_______________250______________t+1/2__________\"d=250%28t%2B1%2F2%29\"
\n" ); document.write( "LATE________________300_______________t_____________\"d=300t\"\r
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\n" ); document.write( "\n" ); document.write( "Using RT=D rule for uniform rates of travel,\r
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\n" ); document.write( "\n" ); document.write( "The distance will be equal when the late plane going faster, overtakes
\n" ); document.write( "the earlier plane going slower.\r
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\n" ); document.write( "\n" ); document.write( "Solve for \"t\" in the equation, \"highlight%28250%28t%2B1%2F2%29=300t%29\".
\n" ); document.write( "First simplification, \"5%28t%2B1%2F2%29=6t\".
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