A is traveling at 72 km per hour on a highway while B is traveling at a speed of 25 meters per second. What is the difference in their speeds in meters per second?
Note
A's speed = 72 km/hr = {(72 ☓ 5) ÷ 18}m/sec = 20 m/sec.
B's speed = 25 m/sec.
Difference = (25 - 20) m/sec = 5 m/sec