SOLUTION: With a tail wind, a plane flew 280 km in 30 mins. With no change in wind the return trip took 40 minutes. Find the speed of the wind and the planes's rate in still air(no wind)

Question 935610: With a tail wind, a plane flew 280 km in 30 mins. With no change in wind the return trip took 40 minutes. Find the speed of the wind and the planes's rate in still air(no wind)
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Distance = Rate * Time
.
.
With the wind,

1.
.
.
.
Against the wind,

2.
Add the equations together,

Then,

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