. A gardener can mow a lawn in 3 hours. After 2 hours, it rained and he discontinued the work. In the afternoon, a girl completed the rest of the work in 1 hour and 15 minutes. How long would it take the girl to mow the lawn alone?

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
Chapter9: Systems Of Linear Equations
Section9.5: Multiplication With The Addition-or-subtraction Method
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1. A gardener can mow a lawn in 3 hours. After 2 hours, it rained and he
discontinued the work. In the afternoon, a girl completed the rest of the work in
1 hour and 15 minutes. How long would it take the girl to mow the lawn alone?


2. John, Paul, and George can finish a job in 12, 16, and 19 hours respectively.
John and Paul worked together for 4 hours. Paul got tired so George worked in
place of him until the job is finished. How long did John work?

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