MHB Book Solving Complex Math Problems

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The discussion revolves around solving a complex math problem involving an airliner flying between two cities with varying wind conditions. The first part of the problem is understood, while the second part presents an equation related to time and distance. The user seeks clarification on the origin of the equation and how to derive the time needed for the flight. Ultimately, the solution indicates that the wind speed is 98 m/s. The conversation highlights the challenges of applying mathematical concepts to real-world scenarios.
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in this problem Part 1 I got it
Part 2 Tab +Tba = 6,7 seg
Where does it comes from??
the third one (804,5 +vw )Tba = 2655
but it got 98,1
then time must be 2,4 seg
How do I get It?
 

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354. City A lies directly west of city B. When there is no wind, an airliner makes the 5550-km roundtrip flight between them in 6,60 h of fl?
of flying time while traveling at to same speed In both directions. When a strong. steady wind is blowing from west to east and the airliner has the same airspeed as before, round trip takes 6,7 h at what speed does the wind blow?

Answer 98 m/seg
 

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