document.write( "Question 775493: A plane flying at 300mph has a 3 hour head start on a chase plane which has a speed of 800 mph. How far from the airport will the chase plane overtake the first plane? \n" ); document.write( "
Algebra.Com's Answer #472985 by josgarithmetic(39633)\"\" \"About 
You can put this solution on YOUR website!
The first and slow plane flies for 3+x hours and the fast late plane flies for just the x hours, before the fast plane reaches the same distance - both planes being at same distance. How far from the airport, d?\r
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\n" ); document.write( "\n" ); document.write( "Slow early plane: \"300%28x%2B3%29\" miles
\n" ); document.write( "Fast late plane: \"800%2Ax\" miles
\n" ); document.write( "Those distance will be equal when the fast one catches up with the slow one.
\n" ); document.write( "\"300%28x%2B3%29=800x\"
\n" ); document.write( "\"3%28x%2B3%29=8x\"
\n" ); document.write( "\"3x%2B9=8x\"
\n" ); document.write( "\"5x=9\"
\n" ); document.write( "\"x=9%2F5\"
\n" ); document.write( "\"x=1%264%2F5\" hours, or 1 hour 48 minutes
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