** Question :** If a car covers 2/5 ๐กโ of the total distance with ๐ฃ1 speed and 3/5 ๐กโ distance with ๐ฃ2 then average speed is

(A) \dfrac{1}{2}\sqrt{v_{1}v_{2}}

(B) \dfrac{v_{1}+v_{2}}{2}

(C) \dfrac{2v_{1}v_{2}}{v_{1}+v_{2}}

(D) \dfrac{5v_{1}v_{2}}{3v_{1}+v_{2}}

**Answer :** option (D)

**Solution :**

*Related*