document.write( "Question 176004: Flying against the jetstream, a jet travels 2920km in 4 hours. Flying with the jetstream, the same jet travels 7630km in 7 hours. What is the speed of the jet in still air, and what is the speed of the jetstream?
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Algebra.Com's Answer #131132 by checkley75(3666)\"\" \"About 
You can put this solution on YOUR website!
D=RT
\n" ); document.write( "2920=R*4
\n" ); document.write( "R=2920/4
\n" ); document.write( "R=730 KMH AGAINST THE JETSTREAM.
\n" ); document.write( "7630=5*7
\n" ); document.write( "R=7630/7
\n" ); document.write( "R=1090 KMH QITH THE JETSTREAM.
\n" ); document.write( "(1090-730)/2=360/2=180 KMH IS THE SPEED OF THE JETSTREAM.
\n" ); document.write( "Proof:
\n" ); document.write( "730+180=910 speed of the jet in still air
\n" ); document.write( "1090-180=910 ditto.
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