Tarun gives Hari a head-start of 60 seconds in a 2400 m race and still beats him by 40 seconds. If the speed of Hari is 6 m/s, find the speed of Tarun.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 8 m/s.
Speed of Hari = 6 m/s
Distance covered by Hari and tarun = 2400 m
Time taken by Hari = 2400/6 = 400 seconds
Tarun gives Hari an initial lead of 60 seconds and still beats him by 40 seconds
Time taken by Tarun = 400 - 60 - 40 = 400 - 100 = 300 seconds
⇒ Speed of Tarun = 2400/300 = 8 m/s