Answered: 13. Dan working alone can paint the…

13. Dan working alone can paint the outside of his house in 36 hours. Mary working alone can paint the same house in 30 hours. If they work together, how long will it take to paint this house?

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 5P

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13. Dan working alone can paint the outside of his house in 36 hours. Mary
working alone can paint the same house in 30 hours. If they work together, how
long will it take to paint this house?

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