document.write( "Question 157591This question is from textbook
\n" ); document.write( ": an airplane takes off from an airport at 7:00 A.M. traveling at a rate of 350 mi/h. two hours later, a jet takes off from the same airport following the same flight path at 490 mi/h. in how many hours will the jet catch up with the airplane? \n" ); document.write( "
Algebra.Com's Answer #116140 by josmiceli(19441)\"\" \"About 
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Let \"t\"= time 1st plane is in the air
\n" ); document.write( "\"t+-+2\"= time 2nd plane is in the air
\n" ); document.write( "When they meet, both planes will have
\n" ); document.write( "flown the same distance, \"d\"
\n" ); document.write( "\"d+=+350t\"
\n" ); document.write( "\"d+=+490%2A%28t+-+2%29\"
\n" ); document.write( "\"350t+=+490t+-+980\"
\n" ); document.write( "\"140t+=+980\"
\n" ); document.write( "\"t+=+7\"hrs
\n" ); document.write( "This is the time the 1st plane is in the air
\n" ); document.write( "The jet catches up with the 1st plane in
\n" ); document.write( "\"t+-+2\"hrs
\n" ); document.write( "\"7+-+2+=+5\"hrs answer
\n" ); document.write( "(actually, 2 PM)
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