Concept explainers
Tofind:the total duration of Sally and Lisa work together.
Answer to Problem 9P
It will take
Explanation of Solution
Given:
It takes sally
Lisa can do it in
Concept used:
Rate of the work:
Ratio of work to the time interval with changes in time rate of work will change.
Calculation:
The equation where
Combining like terms:
Dividing both side by
Hence the it will take
Chapter 7 Solutions
Algebra: Structure And Method, Book 1
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College Algebra (7th Edition)
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A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
Calculus: Early Transcendentals (2nd Edition)
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