Two motorbikes Z and X are 777 meters apart. They both start running separately in the same direction with speeds of 72 m/sec & 35 m/sec respectively. In how much time will Z overtake X?
Answer & explanation
Correct answer: option 3
Relative speed = 72 m/s - 35 m/s = 37 m/s
Time = \(\frac{Distance}{Relative speed}\)
= \(\frac{777}{37}\) = 21 seconds