Quadratic Question. No idea where to start

[Gardenknome]

A plane flies from city A to city B and back again. City A and city B are 1000 km apart. The total journey takes 10 hours. On the way to city B the strong wind is slowing the plane down by 10 km/h. On the way back to city A the wind is stronger and is speeding the plane up by 20 km/h.
(a) Determine a quadratic equation to calculate the plane’s average speed by using that speed = distance time . Give the average speed rounded to two decimals.

(b) Determine the duration of the flight from city B to city A to the nearest minute.

 

[tkhunny]

"No idea where to start" -- I do not believe that.

Did you draw a picture? Put "A" and "B" somewhere. Draw a line between them and mark it "1000 km". Are you SURE you could not have thought of that?

 

[Steven G]

Are there any unknowns? If yes, then you need to define them in a clear way.
See what you can do from there, but do post back.

 

[Gardenknome]

So the unknown would be the average distance but I just cannot figure out how to create a quadratic equation based on the information provided.

 

[tkhunny]

Do you know that Distance = Rate * Time?

What are these things for the two trips?