Time, Speed & Distance · Question 15 · Hard
Time, Speed & Distance question 15
On the same 600 m circular track, two cyclists start together from the starting point in the same direction at 4 m/s and 6 m/s. After how many seconds will they first be together again at the starting point?
- 60 seconds
- 300 seconds
- 600 seconds
- 150 seconds
Answer and explanation
Answer: B. 300 seconds
Explanation: One lap takes 600/4 = 150 s and 600/6 = 100 s. They are both at the start together after LCM(150, 100) = 300 seconds.
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