If a car covers `(2)/(5)^(th)` of the total distance with `v_1` speed and `(3)/(5)^(th)` distance with `v_2`. Then average speed

If a car covers `(2)/(5)^(th)` of the total distance with `v_1` speed and `(3)/(5)^(th)` distance with `v_2`. Then average speed is
A. `(1)/(2)sqrt(v_(1)v_(2))`
B. `(v_(1)+v_(2))/(2)`
C. `(2v_(1)v_(2))/(v_(1)+v_(2))`
D. `(5v_(1)v_(2))/(3v_(1)+2v_(2))`

If a car covers `(2)/(5)^(th)` of the total distance with `v_1` speed and `(3)/(5)^(th)` distance with `v_2`. Then average speed is

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