# 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

(A) $30kmh^{-1}$

(B) $13kmh^{-1}$

(C) $60kmh^{-1}$

(D) $40kmh^{-1}$

Solution :

Tags: No tags