Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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Question 170455This question is from textbook Introductory Algebra
: Solve the problem. Marty leaves the airport in his private plane and flies due east at 186 mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When will the jet overtake Marty's plane?This question is from textbook Introductory Algebra
: Solve the problem. Marty leaves the airport in his private plane and flies due east at 186 mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When will the jet overtake Marty's plane?
Answer by maali40(13) About Me  (Show Source):
You can put this solution on YOUR website!
186*x=(x-2)*434 868=(434-186)*x x=868/248 hours answer is x hrs after marty left airport.Is the airport moving?? anyway we are saying in3.5hrs marty went 186*3.5 miles in1.5 hrs the other jet go's 186*3.5 MILES =1.5*434 MILES JA DAT'S WHAT SAYING.tHESE ARE INTERESTING 186 mph relative to what? Must be saying 186 miles ,in straight line , away from airport in 1 hour. So in 2 hrs 392 miles away.in 1.5 hrs more (392 +1.5*186) miles away.In 1.5 hrs the other jet is 1.5* 434 miles away if on same straight line he gets hit in rear?? dONT'T FORGET YOUR WATCH!