19. Michelle and Rob share an apartment. Michelle can clean the apartment in 80 minutes. Rob can clean the apartment in 20 minutes. How long would it take them working together to clean the apartment?

19. Michelle and Rob share an apartment. Michelle can clean the apartment in 80 minutes. Rob can clean the apartment in 20 minutes. How long would it take them working together to clean the apartment?

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

Problem 16P

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Question

19. Michelle and Rob share an apartment. Michelle can clean the apartment in 80 minutes. Rob can
clean the apartment in 20 minutes. How long would it take them working together to clean the
apartment?

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