
Concept explainers
To Find: The time at which the job is finished.

Answer to Problem 7MPS
The job is finished at at13:08 PM.
Explanation of Solution
Given:
The time taken to split the cord of wood is 7 hour.
The time taken by Meg to do the job is 5 h.
The time at which the Rachel began the job is 9:00 AM and the time at which the Meg joined is 11:00 Am.
Calculation:
Consider the time taken by the first person to work is
The part of the job that can be done by the first person in one hour is
Thus, the part of the job that can be done by the first person is
Consider the equation for the complete job is,
Thus. The job is finished after
Thus, the job is finished at at13:08 PM.
Chapter 14 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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