Question

PLEASE HELP!!!

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Answer 1

50%, 25%, 12.5%

Explanation:

A half life is how long some substance stays whole untill it gets cut in half.

A half life of a hundred years means that after a hundred years, 50% will remain.

Then 25% and so on.

Answer 2

Half-life period is 100 years, it means after 100 years the amount halves.

• 1) After 100 years ⇒ 50% remains
• 2) After 200 years ⇒ 1/2*50% = 25% remains
• 3) After 300 years ⇒ 1/2*25% = 12.5% remains