240 days is 4 times the half-life, which means that a sample of 1000 mg will decay to

after 240 days.
Answer:
3 gallons
Step-by-step explanation:
Each wall 12 x 20 = 240 feet squared
4 walls = 4 x 240 = 960 squared feet
960 divided into 320 = 3
1 gallon --------320
1 gallon------------320
1 gallon-----------320
3 gallons----------960
What do u mean like 82+82?
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