Given:-
With a tailwind, a aircraft can fly 672 miles in 3 hours. Against this same wind, the aircraft can fly the same distance in 4 hours.
To find:-
The effect of the wind and the average airspeed of the aircraft.
So now we average speed of aircraft is,
![\begin{gathered} (672)/(3)=\frac{224\operatorname{km}}{hr},(672)/(4)=\frac{168\operatorname{km}}{hr} \\ \end{gathered}]()
So now the average speed of the aircraft is,
![(224+168)/(2)=(392)/(2)=\frac{196\operatorname{km}}{hr}]()
So the average speed of the aircraft is 196km/hr
So now the wind speed difference is,
So the wind speed difference is 28km/hr