Decay Problem 5

Algebra Level 2

A substance is not decaying at a constant rate.

In the first year, it decays 1%. In the second year, it decays 2%. In the third year it decays 3%. and so on.....

In how many years will the amount of substance come to half? (Round off to nearest whole number)

12 years 9 years 10 years 50 years

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