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)**.