document.write( "Question 625417: Distance covered by plane = 2,160 miles
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\n" ); document.write( "Average speed of airplane?
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Algebra.Com's Answer #393531 by Alan3354(69443)\"\" \"About 
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Distance covered by plane = 2,160 miles
\n" ); document.write( "Time required to cover distance = 4 1/2 hours
\n" ); document.write( "Average speed of airplane?
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\n" ); document.write( "d - r*t
\n" ); document.write( "r = d/t
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