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### Question Asked by a Student from EXXAMM.com Team

** Q 2421767621. ** A and B start form the same point and in the same

direction at 7 a.m. to walk around a rectangular field

400 m x 300m. A and B walk at the rate of 3 km/br and

2.5 km/br respectively. How many times shall they

cross each other, if they continue to walk till 12:30

p.m.?

**IAS 2004 Prelims **