Joan can type 50 form letters in three hours. When Jill helps, they can do the job in one hour. How long would it have taken Jill to do the job alone? [?] minutes
Joan can type 50 form letters in three hours. When Jill helps, they can do the job in one hour. How long would it have taken Jill to do the job alone? [?] minutes
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
Chapter7: Applying Fractions
Section7.8: Work Problems
Problem 3P
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