document.write( "Question 258026: A person travel 1600 miles by commercial jet, then an additional 500 miles by private plane. If the speed of the jet is 4 times the speed of the private plane, and total time in the air was 6 hours, determine the speed of each plane.\r
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document.write( "I have tried the problem as: 4x/1600 + x/500 = 6, and also 1600/4x = 500/x - 6 , and a few other variations on this, but can't seem to come up with the correct answer, which the book has as 150 mph, and 600 mph. I'm think I'm close, but can't figure out what I'm doing wrong. Thanks for your help. Michelle \n" );
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Algebra.Com's Answer #189882 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! time = distance / rate ___ you know the total time and relative rates\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your first equation was close, but inverted ___ (1600 / 4x) + (500 / x) = 6 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiplying by 4x ___ 1600 + 2000 = 24x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3600 = 24x ___ 150 = x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "600 = 4x \n" ); document.write( " |