Radium decomposes in air at the rate proportional to the amount present. It is found out that in 25 years, 1.1% of a certain amount decomposed. Determine approximately how long will it ta а.) For one-half of the original amount to decompose? b.) 20% of the amount to decompose? с.) What percent of the amount will decompose in 50 years?

Radium decomposes in air at the rate proportional to the amount present. It is found out that in 25 years, 1.1% of a certain amount decomposed. Determine approximately how long will it ta а.) For one-half of the original amount to decompose? b.) 20% of the amount to decompose? с.) What percent of the amount will decompose in 50 years?

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter2: Working With Real Numbers

Section2.3: Rules For Addition

Problem 14P

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