document.write( "Question 1076158: The first plane is traveling 2.5 times as fast as the second plane. After traveling in the same direction for 5 hours, they are 735 miles apart. What is the average speed of each plane? \n" ); document.write( "
Algebra.Com's Answer #690842 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
Let n be the speed of the second plane. Then the speed of the first plane is 2.5n. So:
\n" ); document.write( "5(2.5)n-5n=735
\n" ); document.write( "7.5n=735
\n" ); document.write( "n=98
\n" ); document.write( "The 2nd plane averages 98 mph; the first plane averages 245 mph. ☺☺☺☺
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