Ram is travelling at a speed of 72 km per hour while Shyam is travelling at a speed of 90 km per hour. What is the difference in their speeds (in metres per second)?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 5
According to question,
Speed of Ram is 72 km/h and speed of Shyam = 90 km/h
Difference in speed of Ram and Shyam = 90 – 72 = 18 km/h
⇒ Change km/h into m/sec by multiplying 1000/3600
⇒ 18 km/h = 18 × 1000/3600 = 5 m/sec