A car moves a distance of 200 𝑚. It covers first half of the distance at speed 60 𝑘𝑚ℎ−1 and the second half at speed 𝑣. If the average speed is 40 𝑘𝑚ℎ −1 , the value of 𝑣 is

Question : A car moves a distance of 200 𝑚. It covers first half of the distance at speed 60 𝑘𝑚ℎ−1 and the second half at speed 𝑣. If the average speed is 40 𝑘𝑚ℎ −1 , the value of 𝑣 is