A particle travels first half of the total time with speed `v_1` and second half time with speed `v_2.` Find the average speed during the complete journey.

Options

A. `(v_1+v_2)`
B. `(v_1-v_2)/2`
C. `(v_1+v_2)/2`
D. `(v_1*v_2)/2`

Answer

C