Question: Anil, Sunil, and Ravi run along a circular path of length 3 km, starting from the same point at the same time, and going in the clockwise direction. If they run at speeds of 15km/hr, 10 km/hr, and 8 km/hr, respectively, how much distance in km will Ravi have run when Anil and Sunil meet again for the first time at the starting point?
Speeds of Anil, Sunil and Ravi, which are 15 kmph, 10 kmph and 8 kmph respectively.
Length of the track is 3 km.
Time taken by Anil to complete one round = 3/15 × 60 = 12 minutes.
Time taken by Sunil to complete one round = 3/10 × 60 = 18 minutes.
Both Anil and Sunil will reach at the starting points after LCM[12, 18] = 36 minutes.
The distance covered by Ravi in 36 minutes (= 0.6 hours) = 8 × 0.6 = 4.8 km.
Hence, option (d).