two persons start at the same point, walk in opposite directions with 5km/hr and 5.5km/hr respectively. 18)what is the distance separated after 2 and half hrs
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one direction =5.5+5.5+2.75=13.75
other direction=5+5+2.5=12.5
12.5+13.75=26.25
other direction=5+5+2.5=12.5
12.5+13.75=26.25
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