Answer:
The speed of plane is
, and speed wind is
.
Explanation:
Given against the wind the airline flew
miles in
hours.
including the tailwind the return trip took
hours.
Let speed of plane is
.
Also, speed of the wind is
.
Now, we will find speed on each case.
Speed against the wind is

Speed with the wind is

Now, we will write the equation

Add these equation we get,

Now, plug this value in
to get speed of wind

So, the speed of plane in still air is
, and speed of the wind is
.