Students want to clean classrooms. The amount of time (t) it will take to clean varies directly with the number of the rooms (r) and inversely with the number of students (s) who will help. If 25 students clean up 5 rooms, it takes 2 hours to finish the work. 1) Write a formula that models this variation. How long would it take 85 students to clean up 34 rooms?

Students want to clean classrooms. The amount of time (t) it will take to clean varies directly with the number of the rooms (r) and inversely with the number of students (s) who will help. If 25 students clean up 5 rooms, it takes 2 hours to finish the work. 1) Write a formula that models this variation. How long would it take 85 students to clean up 34 rooms?

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 3P

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