SOLUTION: TAB2 NEEDS HELP... Flying against the jetstream, a jet travels 2800 km in 5 hours. Flying with the jetstream, the same jet travels 2760 in 3 hours. What is the speed of the jet

Question 201109: TAB2 NEEDS HELP...
Flying against the jetstream, a jet travels 2800 km in 5 hours. Flying with the jetstream, the same jet travels 2760 in 3 hours. What is the speed of the jet in still air, and what is the speed of the jetstream?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = speed in still air
Let = speed of jetstream
Flying with jetstream, plane's speed is:

Flying against jetstream, plane's speed is:

I can say:
km
km
----------------------

Multiply both sides of the 1st equation by
and both sides of the 2nd by

Add the equations

km/hr
and, since

km/hr

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