SOLUTION: An aeroplane is flying in the direction of air at the speed of 8km/hr, when it fly against the air direction its speed is 5km/hr, find the speed of air?

Question 537597: An aeroplane is flying in the direction of air at the speed of 8km/hr, when it fly against the air direction its speed is 5km/hr, find the speed of air?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the speed of the plane
Let = the speed of the wind
= speed flying with the wind
= speed flying into the wind
given:
km/hr
km/hr
-----------------
Add the equations

km/hr
Plug this back into one of the equations

The air speed is 1.5 km/hr
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