Sugar dissolves in water at a rate proportional to the amount still undissolved. If there were 70 kg of sugar present initially, and at the end of 4 hours only 30 kg is left, how many more hours will it take until 80 percent of the sugar is dissolved?
Sugar dissolves in water at a rate proportional to the amount still undissolved. If there were 70 kg of sugar present initially, and at the end of 4 hours only 30 kg is left, how many more hours will it take until 80 percent of the sugar is dissolved?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Sugar dissolves in water at a rate proportional to the amount still undissolved. If there were 70 kg of sugar present initially, and at the end of 4 hours only 30 kg is left, how many more hours will it take until 80 percent of the sugar is dissolved?
Transcribed Image Text:Sugar dissolves in water at a rate proportional to the amount still undissolved. If
there were 70 kg of sugar present initially, and at the end of 4 hours only 30 kg
is left, how many more hours will it take until 80 percent of the sugar is
dissolved?
5.9 hours
O 2.6 hours
O 7.6 hours
3.6 hours
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