Help! For the life of me I can't figure out how to get the quadratic equation out of this.:confused:

A jet flew from Tokyo to Bangkok, a distance of 4800 km. On the return trip, the speed was decreased by 200 km/h. If the difference in the times of the flights was 2 hours, what was the jet's speed from Bangkok to Tokyo? (13 marks)

Thanks in advance

First of all, let's introduce the unknown terms;

let the speed from Tokyo to Bangkok be
On the return trip, the speed will be





So,



Can you solve it from here?

Quote:

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Originally Posted by Unknown008

First of all, let's introduce the unknown terms;

let the speed from Tokyo to Bangkok be
On the return trip, the speed will be





So,



Can you solve it from here?

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Yes I think I've got it from there. I was getting stuck on what to write for the time, but that makes sense, thanks!

No, that's OK. I was glad to help! See you around! :)