document.write( "Question 921605: A small airplane flies 1120 miles with an average speed of 280 miles per hour. 2 hours after the plane leaves, a Boeing 747 leaves from the same point. Both planes arrive at the same time; what was the average speed of the 747 ?
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\n" ); document.write( "A small airplane flies 1120 miles with an average speed of 280 miles per hour. 2 hours after the plane leaves, a Boeing 747 leaves from the same point. Both planes arrive at the same time; what was the average speed of the 747 ?
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document.write( "Time small airplane traveled for: , or 4 hours
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document.write( "Boeing 747 takes 2 hours less, or 4 – 2, or 2 hours 
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document.write( "Speed of 747: , or  mph \n" );
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