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Arun, Barun and Kiranmala start from the same place and travel in the same direction at speeds of 30, 40 and 60 km per hour respectively. Barun starts two hours alter Arun. If Barun and Kiranmala overtake Arun at the same instant, how many hours after Arun did Kiranmala start?
1. 3
2. 3.5
3. 4
4. 4.5
5. 5
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Last update on February 23, 6:08 am by Rahil Choudhary.
Rahil Choudhary