A chemical reaction converts a certain chemical into another chemical, and the rate at which the first chemical is converted is proportional to the amount of this chemical present at any time. At the end of two hours, 60 grams of the first chemical remain, while at the end of four hours, only 30 grams remain. How many grams of the first chemical were present initially?
A chemical reaction converts a certain chemical into another chemical, and the rate at which the first chemical is converted is proportional to the amount of this chemical present at any time. At the end of two hours, 60 grams of the first chemical remain, while at the end of four hours, only 30 grams remain. How many grams of the first chemical were present initially?
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
Chapter12: Quadratic Functions
Section12.8: Joint And Combined Variation
Problem 9P
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A chemical reaction converts a certain chemical into another chemical, and the rate at which the first chemical is converted is proportional to the amount of this chemical present at any time. At the end of two hours, 60 grams of the first chemical remain, while at the end of four hours, only 30 grams remain. How many grams of the first chemical were present initially?
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