SOLUTION: Flying against the jetstream, a jet travels 4440km in 6 hours. Flying with the jetstream, the same jet travels 8540 km in 7 hours. What is the speed of the jet in still air, and wh
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Question 176337: Flying against the jetstream, a jet travels 4440km in 6 hours. Flying with the jetstream, the same jet travels 8540 km in 7 hours. What is the speed of the jet in still air, and what is the speed of the jetstream?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Rate multiplied by time equals distance.
Call the speed of the jet, , and the speed of the jet stream, , then,
1. Jet speed minus jet stream speed
2. Jet speed plus jet stream speed
Re-arrange eq.1 and eq. 2,
1.
2.
Then add them together,
From eq. 2,
The jet travels at 980 km/hr while the jet stream moves at 240 km/hr.
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