A small quantity of solution containing `Ne^(24)` radio nucliode (half life `= 15 hour`) of activity `1.0` microcurlar is injected into the blood of a person A sample of the blood of volume `1 cm^(3)` taken a after `5` hour shown an activity of the blood in the body of the person . Assume that redicative solution mixed uniformly in the blood of the person `(1 curie = 3.7 xx 10^(10)` disntegrations per sound)