A gives B a head-start of 10 seconds in a 1500 m race and both finish the race at the same time. What is the time taken by A (in minutes) to finish the race if speed of B is 6m/s?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 4.
A gives B a head-start of 10 seconds in a 1500 m race and both finish the race at the same time.
⇒ Speed of B = 6 m/s
⇒ Time taken by B to finish the race = 1500/6 = 250 s
A gives a head start of 10 seconds to B.
⇒ Time taken by A to finish the race = 250 - 10 = 240 s
⇒ 240 s = 240/60 = 4 minutes.