# Solution: What is the percentage lost of Radium in 100 years?

Radium decomposes at a rate proportional to the amount present. If the half of the original amount disappears after 1000 years, what is the percentage lost in 100 years?

#### Problem Statement:

Radium decomposes at a rate proportional to the amount present. If the half of the original amount disappears after 1000 years, what is the percentage lost in 100 years?

• A. 6.70%
• B. 4.50%
• C. 5.35%
• D. 4.30%

The percentage lost of Radium in 100 years is 6.70%

Solution:

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