Dimple is travelling at a speed of 90 km per hour on a highway, while Sachin is travelling at a speed of 108 km per hour. What is the difference in their speeds, in metres per second?
Answer & explanation
Correct answer: option 1
Difference in speed = 108 - 90 = 18 km/h
18 km/h = 18 × \(\frac{5}{18}\) = 5 m/sec