Problem 441. Drying sweater?

Created by AMITAVA BISWAS

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>A sweater is revolving in a slow low power dryer and losing moisture at any moment at the constant rate 100% of its current moisture content in 100 minutes.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>Veronica knew the sweater was x times its dry weight when she put her wet sweater from the washer to the dryer.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>How many minutes she should wait so that the sweater weighs w times its dry weight?</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>Please try a general solution, the test suite may expand later.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

67 Solutions
31 Solvers

Last Solution submitted on Oct 27, 2022

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

Jean-Marie Sainthillier on 21 Aug 2012

I understand the problem but not the tests

Jean-Marie Sainthillier on 29 Aug 2012

-1 :)

Jihye Sofia Seo on 13 Feb 2017

It seems like the water content halves every ~69 minutes. But the first sentence about 100% and 100 minutes are very confusing. If it is exponential decay, then water should never reach 0.

Rafael S.T. Vieira on 10 Oct 2020

This duration, "in 100 minutes", is misleading, since we are dealing with continuous compouding or exponential decay. Probably a better drescription would be: "A sweater is revolving in a slow low power dryer and losing moisture at any moment at the constant rate 100% of its current moisture content"

Problem Recent Solvers31

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 441. Drying sweater?

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers31

Suggested Problems

More from this Author100

Problem Tags

Community Treasure Hunt

Problem 441. Drying sweater?

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers31

Suggested Problems

More from this Author100

Problem Tags

Community Treasure Hunt

Players