Speed of car A is 108 km/h and speed of car B is 40 m/s. Choose the correct answer.
(A) Car B is faster by 10 m/s
(B) Car A is faster by 10 m/s
(C) Speed of both cars is equal
(D) Car B is faster by 36 km/h
(E) Both (A) and (D)
Speed of car A = 108 km/h m/s =30 m/s
It is given that speed of car B = 40 m/s km/h km/h km/h
Therefore, car B is faster by 10 m/s.
We can also say that car B is faster by (144-108)=36 km/h
Hence, the answer is (E).