Given data
*The given ground speed of the helicopter is v_g = 230 km/h
*The given wind speed is v_w = 25 km/h
The formula for the air speed is given as
[tex]v_a=v_g-v_w[/tex]Substitute the known values in the above expression as
[tex]\begin{gathered} v_a=(230)-(25) \\ =205\text{ km/h} \end{gathered}[/tex]Hence, the air speed is v_a = 205 km/h. The correct option is (C)
