It normally takes me 24 minutes to walk to work. Today I walked 3/4 of the way as usual, but because of some roadworks the final part of my journey was slower, and my walk to work took me four minutes longer than it normally does. The total distance I walked was the same. At what fraction of my normal speed did I walk, on average, during the slower part of my journey?

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
Chapter3: Solving Equation And Problems
Section3.7: Costs, Income, And Value Problems
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It normally takes me 24 minutes to walk to work. Today I walked 3/4 of the way as usual, but because of some roadworks the final part of my journey was slower, and my walk to work took me four minutes longer than it normally does. The total distance I walked was the same. At what fraction of my normal speed did I walk, on average, during the slower part of my journey?

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