A lethal dose of 50/30 means:
50 people will die in 30 hours
30 people out of the 50 will die
50 percent of the group will die in 30 days
30-50 percent of people will die
50 percent of the group will die in 30 days
Rationale: Lethality of 50/30 means 50% will die within in 30 days. Death may result 6-8 weeks after a radiation exposure greater than 2 Gy, 200 rad.
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