document.write( "Question 909281: A plane left Kennedy Airport tuesday morning for a 605−mileˏ 5−hour trip.
\n" ); document.write( "For the first part of the tripˏ the average speed was 115 mph.
\n" ); document.write( "For the remainder of the tripˏ the average speed was 125 mph. How long did the plane fly at each speed. \n" ); document.write( "

Algebra.Com's Answer #551793 by lwsshak3(11628) $\"\"$ $\"About$

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A plane left Kennedy Airport tuesday morning for a 605−mileˏ 5−hour trip.
\n" ); document.write( "For the first part of the tripˏ the average speed was 115 mph.
\n" ); document.write( "For the remainder of the tripˏ the average speed was 125 mph. How long did the plane fly at each speed.
\n" ); document.write( "***
\n" ); document.write( "let x=distance traveled during 1st part of trip
\n" ); document.write( "605-x=distance traveled during remainder of trip
\n" ); document.write( "distance/speed=travel time
\n" ); document.write( " $\"x%2F115%2B%28605-x%29%2F125=5\"$
\n" ); document.write( "125x+115(605-x)=5*125*115
\n" ); document.write( "125x+69575-115x=71875
\n" ); document.write( "10x=2300
\n" ); document.write( "x=230
\n" ); document.write( "605-x=605-230=375
\n" ); document.write( "230/115=2
\n" ); document.write( "375/125=3
\n" ); document.write( "How long did the plane fly at each speed.
\n" ); document.write( "At 115 mph: 2 hrs
\n" ); document.write( "At125 mph: 3 hrs
\n" ); document.write( " \n" ); document.write( "

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