document.write( "Question 86323This question is from textbook Beginning and Intermediate Algebra
\n" ); document.write( ": Hello, this word problem is from Gold's Math 40\r
\n" ); document.write( "\n" ); document.write( "A Piper Cub airplane has an average air speed that is 10mph faster than a Cessna 150 airplane. If the combined distance traveled by these two small planes is 690 miles after 3 hours. What is the average speed of each plane?\r
\n" ); document.write( "\n" ); document.write( "Any help will be appreciated,this word problem was on a recent quiz.
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Algebra.Com's Answer #62426 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
A Piper Cub airplane has an average air speed that is 10mph faster than a Cessna 150 airplane. If the combined distance traveled by these two small planes is 690 miles after 3 hours. What is the average speed of each plane?
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\n" ); document.write( "Cessna 150 DATA:
\n" ); document.write( "rate = x mph; time = 3 hrs; distance = rt = 3x miles
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\n" ); document.write( "Piper Cub DATA:
\n" ); document.write( "rate = x+10 mph; time = 3 hrs; distance = rt = 3(x+10) = 3x+30 miles
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\n" ); document.write( "EQUATION:
\n" ); document.write( "distance + distance = 690 miles
\n" ); document.write( "3x + 3x+30 = 690
\n" ); document.write( "6x = 660
\n" ); document.write( "x= 110 mph (speed of the Cessna)
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\n" ); document.write( "x+10 = 120 mph (speed of the Piper Cub)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
\n" ); document.write( "\n" ); document.write( "3x +
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