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** Q 2336856772. ** Bob, Damon and Charlie decided to race on a circular race track. All of them start from the same point at different times. Damon started 3 minutes after Charlie and both Bob and Damon goes ahead of Charlie’s car at 8 pm on the same day. The speed of Bob, Damon and Charlie’s cars are 120, 80, 70 metre per minute respectively. Find the time at which Bob started?

**IBPS-PO 2017 Mock Mains **